Windows has a built-in test tool which often warns you of errors regarding your hard drive or partition. Among the many kinds of warnings, an extremely dreadful one is “A disk read error occurred”. If this error happened to you, you have come to the right place – we have 7 useful solutions for you to fix this problem.

Help, a Disk Read Error Occurred Windows 10/8/7/XP!

A disk read error is very common; it usually occurs as soon as your computer boots up from SSD, HDD or another hard drive and has affected a large number of users of Windows 10/8/7/XP.

This error has the message “A disk read error occurred. Press Ctrl+Alt+Del to restart” on the screen like the picture below:

A disk read error occurred

This message indicates that your hard drive has a problem when the operating system attempts to read the disk. That is, the disk is preventing the computer from entering into its operating systems.

Simply put, a disk error could be caused by several reasons such as incorrect boot order, BIOS issue, IDE cables failure, incorrect MBR configuration, faulty hard drive, etc.

When meeting such an issue, no matter how many times you restart your computer by pressing “Ctrl+Alt+Del” keys, this error still exists.

In the presence of this issue, it will still exist regardless of how many times you restart your computer by pressing “Ctrl+Alt+Del”. In fact, a disk read error is not a problem that can be solved by a simple restart. But don’t worry, this post will tell you top seven useful solutions to a disk read error occurred SSD.

How to Fix Disk Read Error Windows XP/7/8/10

Solution 1: Boot OS from Hard Drive

If a disk error occurred, the first thing to do is to check whether the boot order is correct in BIOS.

There are different ways to get into BIOS in different computer models and operating systems. When turning on the computer, the first boot screen will usually show you what key to press to go into the BIOS.

You can refer to this guidance How to Enter The BIOS On Your Computer. Once you are in BIOS, find the boot order section. In the boot order section, check to make sure the correct hard drive is placed as the first boot priority before any others in the listing.

set to boot your PC from the correct hard drive in BIOS

Changing this setting might be enough to help your computer boot normally. If it is still unbootable, try the next solution to fix disk error occurred.

Solution 2: Reset or Upgrade BIOS

Resetting your computer BIOS to default or upgrading to the latest version might be able to solve “A disk read error occurred” in Windows XP/7/8/10.

Here is the step-by-step guide to reset BIOS:

  1. Press a specific key (F2, F8, F12, Esc or Del) according to your computer model and OS to enter into BIOS.
  2. Find the option to reset BIOS to default.

Tip: The option name is different depending on different computer manufacturers and BIOS versions, which can be “Load BIOS Defaults”, “Load Default Settings”, “Load Fail-Safe Defaults”, “Load Setup Default” or “Get Default Values”. Choose one according to the real case, then save this change.

reset BIOS to defualt settings

If the disk read error on boot up persists, try the following solution.

Solution 3: Repair Master Boot Record and Boot Sector

A corrupted or damaged Master Boot Record or boot sector could cause disk errors. Therefore, repairing the MBR or boot sector might be able to fix the issue”A disk read error occurred” with USB boot.

You can use a professional and reliable partition and disk management tool – MiniTool Partition Wizard – to repair your MBR in Windows XP/7/8/10.

As a dedicated partition manager, MiniTool Partition Wizard could be used for many operations such as resize/move/extend/copy/wipe partition, rebuild MBR, migrate OS to SSD/HD, copy disk, recover lost partition, perform data recovery, and so on.

Here we strongly recommend MiniTool Partition Wizard Professional Ultimate Edition. This edition has a feature called “Bootable Media” based on Win-PE; it is designed to manage disks and partitions when the operating system fails to boot or when there is no operating system.

Note: MiniTool Partition Wizard Free Edition doesn’t support Win-PE Bootable Media. In order to repair MBR quickly and effectively, a license is needed..

Follow the steps in these two articles to create bootable media using MiniTool software:

  • How to Build Boot CD/DVD Discs and Boot Flash Drive with Bootable Media Builder?
  • How to Boot from Burned MiniTool Bootable CD/DVD Discs or USB Flash Drive?

Step 1: After booting your computer from a MiniTool Partition Wizard Bootable Disc, you will enter the MiniTool PE Loader interface. Click “MiniTool Partition Wizard” to continue.

MiniTool PW loader

Step 2: In the main interface of MiniTool Partition Wizard, select the target hard drive with the operating system and click “Rebuild MBR” from the “Check Disk” menu. Or, choose this feature from the context menu.

rebuild MBR to fix disk read error

Step 3: Then click “Apply” to execute this change.

Tip: After repairing MBR, please remember to change the boot order before restarting your computer. Your computer should be bootable now.

Solution 4: Test Your Hard Drive

If your hard drive has a bad sector, it could cause the issue “a disk read error occurred” during the process of computer startup as well.

This issue appears quite frequently in Windows XP/7/8/10, so you should check the disk surface to see if there are any bad sectors.

To do this, purchase MiniTool Partition Wizard Pro Ultimate Edition and use “Bootable Media” to create a bootable USB flash drive or CD/DVD. After that, restart the computer from the bootable device you just created.

Step 1: Right-click the target hard drive (SSD or HDD) that contains the Windows XP, 7, 8 or 10 operating system and then click “Surface Test“. This feature is designed to scan and test each sector of the hard disk.

surface test your SSD

Step 2: Click “Start Now” to start scanning all sectors of your disk. Refer to the following screenshot: MiniTool Partition Wizard will mark “disk block without read error” in green, and mark “read error in this block” in red.

All sectors of your disk should be tested completely within a few minutes.

check bad sectors with MiniTool Partition Wizard

A: Shield Bad Blocks

After finishing the disk test, if there are some bad sectors, you should take a measure to shield them. Unfortunately, MiniTool Partition Wizard doesn’t have this feature. Instead, we find What to Do If I Find Bad Sectors on Hard Drive in Windows 10/8/7?.

Tip: When there are bad sectors in the disk, Windows is telling you that it might have detected a hard disk problem. Click this post for more information.

B: Back up Important Files

When there are bad sectors on your hard drive, due to data security reasons, you should back up your important files after shielding them. Otherwise, the data could be lost.

How to make a backup while the system is unbootable with “A disk read error occurred” message? Don’t worry, you can also ask MiniTool Partition Wizard Bootable CD for help.

Step 1: In the main interface of MiniTool Partition Wizard, right-click the disk and select “Copy Disk” from the context menu. 

MiniTool Partition Wizard copy disk

Step 2: Select a destination disk to copy all data on the source disk to.

choose a target disk to save the cloned data

Warning:

  • During the process, the content of the target hard drive will be deleted, so an empty disk would work the best. If the target disk contains data, please ensure the important data has been backed up.
  • The target disk size should be larger than the used disk space on the source disk.

Step 3: Choose a copy option between “Fit partitions to entire disk” and “Copy partition without resizing“.

Attention:

  1. You can check the “Align partitions to 1MB ” option to improve the performance for advanced format disk & SSD.
  2. To change the target disk to GPT, check “Use GUID Partition Table for the target disk“.

choose copy option

Step 4: MiniTool Partition Wizard will advise you to modify BIOS boot order. Feel free to ignore it since it is unnecessary for a backup in this case.

how to boot from the destination disk

Step 5: Finally click “Apply” to finish all changes.

alick apply after disk cloning

With the help of MiniTool Partition Wizard Bootable Edition, you can easily fix the disk read error. To boot your computer, get the Professional Ultimate Edition and use “Bootable Media” to create a bootable disc now.

Tip: In addition to MiniTool Partition Wizard, you can also use the professional Windows backup software, MiniTool ShadowMaker, to back up files on the hard drive in Windows XP/7/8/10. It also has Bootable Edition to fix the “A disk read error” issue.

MiniTool ShadowMaker TrialClick to Download100%Clean & Safe

Solution 5: Check Your Hard Disk IDE Cables

A disk read error can be caused by bad or incorrect IDE cables that are loose or defective.

To rule out this possibility, you can open the computer’s hood and check whether each IDE cable is fastened completely on both ends. If there is something wrong, the faulty cables will need to be replaced to fix “A disk read error occurred”.

Solution 6: Test RAM

Sometimes, read disk error is related to a faulty RAM stick or RAM slot. In this case, it is necessary to make a completely non-destructive and exclusively informative test on your computer’s RAM.

You can download an appropriate version of Memtest86+ to check the RAM. Follow the guidance here: How to Test PC Ram with MemTest86.

If this tool finds errors, try inserting your current RAM sticks into different RAM slots to confirm whether that the problem exists in the RAM stick or a RAM slot. Then you can take corresponding measures to fix it.

Solution 7: Rescue Data

If you have tried all the above solutions but still receive disk read error on boot up, you can consider recovering data from your hard drive. Your partition can get lost, so try MiniTool Partition Wizard with its “Partition Recovery” feature in the toolbar to retrieve the lost partition as well as data.

If your partition isn’t lost but fails to boot your computer while showing an error message, your disk might be damaged. In this case, please try “Data Recovery” in at least a MiniTool Partition Wizard Ultimate Edition. With this feature, you can retrieve data from the damaged partition in Windows XP/7/8/10.

MiniTool Partition Wizard Data Recovery

Another data recovery software, MiniTool Power Data Recovery, is also helpful for retrieving data from a corrupted hard drive.

After recovering data, then reinstalling operating system is a good choice. Please prepare a Windows installation disc and then insert it into your computer. Next start to install a new OS according to the wizards.

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Bottom Line

Has “A disk read error occurred” message taken over the screen of your Windows XP/7/8/10 on desktop/laptop upon boot up? Take it easy now! Try these solutions above to fix the disk read error.

If you have any suggestion or advice, welcome to email us via [email protected] or leave a comment below.

A Disk Read Error Occurred FAQ

How do I fix a disk read error?

  1. Check the boot order
  2. Reset or upgrade BIOS
  3. Repair MBR and boot sector
  4. Test your hard drive
  5. Check the hard disk IDE cables
  6. Test RAM
  7. Rescue data

What does a disk read error occurred mean?

“A disk read error occurred” is a common error that you can encounter and it indicates that Windows detects a hard disk problem or the process of reading hard disk goes wrong. Restart the computer by pressing Ctrl + Alt + Del cannot fix the error and you can still get the same screen.

How long can repairing disk errors take?

Position: How Tos – Partition Management – Fixed – “A disk read error occurred Press Ctrl + Alt + Del to restart”

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Description and symptoms of read disk error

A disk read error occurred is a common error that we can encounter. This error means Windows detects a hard disk problem or there is something wrong with the process of reading hard disk. This error appears while computer boots up and blocks computer to boot into operating system, directly preventing user out of system. It appears with message “A disk read error occurred Press Ctrl + Alt + Del to restart” as picture below. When you press Ctrl + Alt + Del to restart computer you still get same error without being able to boot up Windows.

A disk read error occurred Press Ctrl + Alt + Del to restart

Here is one of such questions related to disk read error from customers:

“Hey All! I did a system update for my computer. The download and installing process went well, but when I restarted computer I got an error on the black screen saying “A disk read error occurred Press Ctrl + Alt + Del to restart”. I restarted computer for several times and all ended up with this prompt. I have used this laptop for nearly 5 years and never had a disk read issue. I can’t do anything with it, as I can’t access Windows 7. Is there something wrong with the hard disk or system update? Is it possible to fix it if I reinstall Windows using installation CD? Do you have better solutions on this issue?”

Why does disk read error occur?

The actual cause of this error varies from computer to the other, as it ranges from hardware issue to software problem. This section makes a summing up of the most common reasons behind the disk read error.

Computer hard drive fails

In most cases, the read disk error indicates hard drive damage. When boot sector on hard drive is damaged or system partition gets bad sectors, then system booting will be stuck with errors.

No bootable hard disk

Sometimes, the disk read error occurred before system booting is the result that computer read wrong bootable hard disk. If there is no bootable hard disk or the bootable is not properly configured, system won’t be able to boot normally.

Hard drive cables damage

The IDE cable is the wide piece of wrings in your computer case and it is responsible for connecting hard drive and motherboard. Occasionally, incorrect or loose IDE cables can lead to read or write errors on hard drives.

BIOS setting issue

In rare cause, disk read error caused by improper BIOS settings. When BIOS updates are available, you should update it carefully.

MBR is corrupted

Incorrect or invalid Master Boot Record setting is another common cause. Furthermore, corrupted MBR configuration can be caused by virus attack, power outage, bad sectors, etc. Besides, misconfigured partition table might bring about this issue.

Sudden power failure

Improperly shutting down system is likely to corrupt files and hard disk on your computer. This typically happens if power is cut accidentally or system is forced to shut down in order to kill an unresponsive program. After computer crashes, Windows will ran a check for file system and disk while booting with the purpose of verifying and repairing problematic files.

Operating system issue

The incomplete or improper installation of Windows also gives rise to this issue, such as system is lacking of dll files or some system registry files are damaged.

Fix “A disk read error occurred” on Windows

Since reasons behind this error are varied, there is no set solution to fix this issue. We provide a couple of different solutions so that you can try out to fix this problem on your own.

Solution 1: Test RAM memory

This is seldom regarded as a solution to fix the disk read error issue, but it works in some situations. Because a faulty RAM slot or RAM slot may result in the problem. It sounds odd that testing RAM has something to do with hard disk read error, but memory problem indeed brings about various issues. Since the RAM memory test is easy and non-destructive, you may as well perform a complete test for RAM memory. The entire test process is safe and doesn’t damage hard disk or data, you can try this first.

A disk read error occurred Press Ctrl + Alt + Del to restart

If you added new RAM memory to computer in recent days, you can try to remove it and leave only one RAM. Then restart computer and to view whether the issue is eliminated.

Also, you can move the single RAM module to the other slot to check whether RAM slot is damaged. To do so, you can leave one RAM module on one slot and restart computer. If disk read error still occurs, move the RAM to the other slot and start computer again.

Additionally, you can use third party tool to run the test. Burn the tool to your bootable CD or USB drive, and then it can diagnose RAM after computer is booted to CD or USB disk.

Solution 2: Check / replace hard drive cables

Hard disk cable might be broken, leading to system can’t read disk correctly. To rule out this possibility, you can do this: try a new or different port for IDE or SATA cable. If there is more than one hard drive connected to computer, you should unplug all disks except the one from which operating system boots. Then you can check whether the cable or post is damaged. If you get the disk read issue after a new disk is installed, you need to make sure the disk is on the master connector if possible and set the disk jumper to master. If cables on your computer are damaged, you should replace them with new ones.

Another way to check hard drive cables is moving the affected hard drive to another working computer. If hard drive works well on that computer, you can superficially make a preliminary judgment on cables as well as the hard drive’s health condition. If that computer can boot into Windows without prompting “A disk read error occurred Press Ctrl + Alt + Del to restart”, the problem lies in your computer instead of the hard disk.

Solution 3: Reset or upgrade BIOS

Installing an incorrect or incomplete version may trigger serious issue, thus you should upgrade BIOS very carefully. Plus, restoring BIOS to default setting or upgrading can fix this issue in some circumstances. How to do that?

Reset BIOS

Step 1  Restart computer and press the key which enters BIOS setup. The key might be F2, F10, Del, etc. varying from computer to computer. Just look carefully at the screen while computer starts.

Step 2  Use arrow keys to switch menu options and locate the option to reset BIOS. The name to revert BOIS to default settings is not the same on different computers, which can be Load Fail-Safe Defaults, Apply Default, Load BIOS Defaults, Load Default Settings, Load Setup Default, Factory settings, etc.

A disk read error occurred Press Ctrl + Alt + Del to restart

Step 3  Save changes, exit BIOS and restart computer.

Upgrade BIOS

Go to the website of your computer’s manufacturer and find the Download center where you can download the latest BIOS version. Please note that you should select BIOS version based on your operating system, version, system board model, etc. Usually, the BIOS download comes in a compressed file such as .zip file. When you extract data from it, you can see a README file which will guide you through the upgrading.

Solution 4: Rebuild MBR (Master Boot Record)

table for the disk, disk signature as well as executable code called master boot code. When computer boots, BIOS codes identifies startup disk and reads MBR. If MBR is damaged or corrupted, you will not be able to boot system or even lose partitions. How to rebuild MBR? Here we can use DiskGenius Free to rebuild MBR. DiskGenius is a free partition manager designed to manage disk and partitions and recover lost files and partitions. It provides free features to rebuild MBR, repair partition table, resize partition, edit hex data, etc. Let’s see the steps to rebuild master boot record.

Since the affected computer can’t boot to Windows, you need to boot computer with bootable disk.

Step 1  Create a bootable disk for DiskGenius. Run DiskGenius on another normal computer and insert a USB flash drive to that PC. Select the flash drive and click “Tool” menu to choose “Create WinPE Bootable USB Drive of DiskGenius”. Click “OK” to confirm the operation.

A disk read error occurred Press Ctrl + Alt + Del to restart

Step 2  Insert the bootable disk to the computer that reports disk read error and power on PC.

Step 3  Press the key that can enter BIOS immediately where you can set the bootable disk as the first boot. Save changes and restart computer.

Step 4  Now computer will boot from the USB disk and enter DiskGenius Dos version by itself.

Step 5  Select the hard drive from which you want to boot computer and click “Disk” from menu to choose “Rebuild Master Boot Record”. Click Yes on the popped-up message box.

A disk read error occurred Press Ctrl + Alt + Del to restart

Solution 5: Verify and repair bad sectors

Bad sectors are sectors on storage devices that are physically or logically damaged and cannot be read or written by operating system. You can test hard drive by viewing S.M.A.R.T. information or checking bad sectors with disk tools. If computer can’t boot to Windows, you can boot computer with bootable disk. In that case, please create DiskGenius Bootable disk following step 1~4 in Solution 4. Alternatively, if you have other bootable disk, you can copy the installation folder of DiskGenius to the bootable disk.

Step 1  Launch DiskGenius and select the disk that says disk read error, and then click “Disk” to choose “Verify or Repair Bad Sectors”, as follows:

Step 2  Click “Start Verify” button on the “Bad track verification” window and DiskGenius starts scanning bad sectors. As shown in the screenshot below, red blocks are damaged, representing bad sectors. Time taken by the verifying process depends on the capacity of select hard drive, please wait patiently.

A disk read error occurred Press Ctrl + Alt + Del to restart

Step 3  If the hard drive contains bad sectors, you should back up important files to another disk and try repairing bad sectors with DiskGenius.

How to rescue data while disk reads error?

Hard disk read error should be attached great importance, for it not only prevents system from booting, but also sometimes gives rise to data loss. As mentioned in previous part, corrupted MBR may lead to partition and data loss; bad sectors can change partition into inaccessible. Can you recover lost data while partition cannot be opened or hard drive is empty and contains no partition? This section is going to introduce an easy method to recover files from corrupted and inaccessible partition.

Step 1  Run DiskGenius and locate the partition that needs recovering data. The click “File Recovery” button from the tool bar to open file recovery window.

Step 2  Select “Complete Recovery” option and click “Start” button. To recover deleted files, you should select “Recover Deleted Files Only”. File scanning might long of the partition being scanned is of large capacity. You can preview files during scanning when files are displayed.

A disk read error occurred Press Ctrl + Alt + Del to restart

Step 3  Preview recoverable files. You can preview file’s original content by double clicking it. File preview can help judge whether files can be recovered correctly and successfully, because it identifies whether file has been damaged.

Step 4  Recover files. Select and right click files you want to recover and choose “Copy to”. Then you can choose a location to save recovered files.

Summary

This article has listed 5 solutions to this disk read errors and there might be other approaches on account that causes are various. If you have other solutions, you are warmly invited to contact us and share your solutions with readers. Additionally, to protect system or data from damage, you should form the habit of backing up in regular.

If you face this error, you won’t boot into your Windows, and you will be stuck in the restart loop. The full error message is “A disk read error occurred. Press Ctrl+Alt+Del to restart” which means you need to press Ctrl + Alt + Del to restart your PC you will again see this error screen, hence the restart loop. Now the only way to get out of this infinite reboot loop is to fix the cause of this error and then only you would be able to boot into Windows normally.

10 ways to fix A disk read error occurred

These are the various possible cause of this error:

  • Damaged or failing hard disk
  • Corrupted memory
  • Loose or faulty HDD cables
  • Corrupt BCD or boot sector
  • Incorrect Boot Order
  • Hardware issues
  • Incorrect MBR configuration
  • Incorrect MBR configuration
  • BIOS issue
  • Incorrect active partition

These are the various issues that can cause “A disk read error occurred” but the most common cause of this error seems to be invalid MBR configuration or the absence of an active partition. So without wasting any time, let’s see how to fix A disk read error with the below-listed troubleshooting guide.

Table of Contents

Note: Make sure to remove any bootable CDs, DVDs or USB Flash drive attached to the PC before following the below-listed methods.

Method 1: Set Correct Boot Disk Priority

You may be seeing the error “A disk read error occurred” because the boot order was not properly set, which means that computer is trying to boot from another source which doesn’t have an operating system thus failing to do so. To fix this issue, you need to set the Hard Disk as the top priority in the Boot order. Let’s see how to set proper boot order:

1. When your computer starts (Before the boot screen or the error screen), repeatedly press Delete or F1 or F2 key (Depending upon your computer’s manufacturer) to enter BIOS setup.

press DEL or F2 key to enter BIOS Setup

2. Once you are in BIOS setup, select the Boot tab from the list of options.

Boot Order is set to Hard Drive | A disk read error occurred [SOLVED]

3. Now make sure that the computer Hard disk or SSD is set as a top priority in the Boot order. If not, use up or down arrow keys to set hard disk at the top, which means the computer will first boot from it rather than any other source.

4. Finally, press F10 to save this change and exit. This must-have Fix A disk read error occurred, if not then continue.

Method 2: Check if the Hard Disk is failing

If you are still not able to Fix A disk read error occurred then chances are your hard disk might be failing. In this case, you need to replace your previous HDD or SSD with a new one and install Windows again. But before running to any conclusion, you must run a Diagnostic tool to check if you really need to replace the Hard Disk or not.

Run Diagnostic at startup to check if the Hard disk is failing

To run Diagnostics restart your PC and as the computer starts (before the boot screen), press F12 key. When the Boot menu appears, highlight the Boot to Utility Partition option or the Diagnostics option press enter to start the Diagnostics. This will automatically check all the hardware of your system and will report back if any issue is found.

Method 3: Check if Hard Disk is properly connected

In most cases, this error occurs because of the faulty or loose connection of hard disk and to make sure that this is not the case where you need to check your PC for any fault in the connection.

Important: It is not recommended to open the casing of your PC if it’s under warranty as it will void your warranty, a better approach, in this case, will be taking your PC to the service center. Also, if you don’t have any technical knowledge, then don’t mess with the PC and look for an expert technician who can help you check for faulty or loose connection of hard disk.

Check if Computer Hard Disk is properly connected | A disk read error occurred [SOLVED]

Once you have checked the proper connection of hard disk is established, reboot your PC, and this time you may be able to Fix A disk read error occurred.

Method 4: Run Memtest86+

Note: Before starting, make sure you have access to another PC as you will need to download and burn Memtest86+ to the disc or USB flash drive.

1. Connect a USB flash drive to your system.

2. Download and install Windows Memtest86 Auto-installer for USB Key.

3. Right-click on the image file which you just downloaded and selected “Extract here” option.

4. Once extracted, open the folder and run the Memtest86+ USB Installer.

5. Choose you’re plugged in USB drive to burn the MemTest86 software (This will format your USB drive).

memtest86 usb installer tool

6. Once the above process is finished, insert the USB to the PC, giving the A disk read error message.

7. Restart your PC and make sure that boot from the USB flash drive is selected.

8. Memtest86 will begin testing for memory corruption in your system.

Memtest86

9. If you have passed all the test, you can be sure that your memory is working correctly.

10. If some of the steps were unsuccessful, then Memtest86 will find memory corruption which means that your “A disk read error occurred” is because of bad/corrupt memory.

11.In order to Fix A disk read error, you will need to replace your RAM if bad memory sectors are found.

Method 5: Run Startup/Automatic Repair

1. Insert the Windows 10 bootable installation DVD or Recovery Disc and restart your PC.

2. When prompted to Press any key to boot from CD or DVD, press any key to continue.

Press any key to boot from CD or DVD

3. Select your language preferences, and click Next. Click Repair your computer in the bottom-left.

Repair your computer | A disk read error occurred [SOLVED]

4. On choose an option screen, click Troubleshoot.

Choose an option at windows 10 automatic startup repair

5. On Troubleshoot screen, click the Advanced option.

select advanced option from troubleshoot screen

6. On the Advanced options screen, click Automatic Repair or Startup Repair.

run automatic repair | A disk read error occurred [SOLVED]

7. Wait till the Windows Automatic/Startup Repairs complete.

8. Restart and you have successfully Fix A disk read error occurred on Boot, if not, continue.

Also Read: How to fix Automatic Repair couldn’t repair your PC.

Method 6: Run System File Checker (SFC) and Check Disk (CHKDSK)

1. Press Windows Key + X then click on Command Prompt (Admin).

command prompt with admin rights

2. Now type the following in the cmd and hit enter:

Sfc /scannow
sfc /scannow /offbootdir=c:\ /offwindir=c:\windows

SFC scan now command prompt

3. Wait for the above process to finish and once done, restart your PC.

4. Next, run CHKDSK to Fix File System Errors.

5. Let the above process complete and again reboot your PC to save changes.

Method 7: Fix Boot Sector and Rebuild BCD

1. Using above method open command prompt using Windows installation disk.

Command prompt from advanced options | A disk read error occurred [SOLVED]

2. Now type the following commands one by one and hit enter after each one:

bootrec.exe /FixMbr
bootrec.exe /FixBoot
bootrec.exe /RebuildBcd

bootrec rebuildbcd fixmbr fixboot

3. If the above command fails, then enter the following commands in cmd:

bcdedit /export C:\BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:\boot\bcd bcd.old
bootrec /RebuildBcd

bcdedit backup then rebuild bcd bootrec

4. Finally, exit the cmd and restart your Windows.

5. This method seems to Fix A disk read error occurred on Startup or Disk Write error in Games like DOTA 2. But if it doesn’t work for you then proceed further..

Method 8: Change the Active Partition in Windows

1. Again go to Command Prompt and type: diskpart

diskpart

2. Now type these commands in Diskpart: (don’t type DISKPART)

DISKPART> select disk 1
DISKPART> select partition 1
DISKPART> active
DISKPART> exit

mark active partion diskpart | A disk read error occurred [SOLVED]

Note: Always mark the System Reserved Partition (generally 100MB) active and if you don’t have a System Reserved Partition, mark C: Drive as the active partition.

3. Restart to apply changes and see if the method worked.

Method 9: Change SATA configuration

1. Turn off your laptop, then turn it on and simultaneously press F2, DEL or F12 (depending on your manufacturer)
to enter into BIOS setup.

press DEL or F2 key to enter BIOS Setup

2. Search for the setting called SATA configuration.

3. Click Configure SATA as and change it to AHCI mode.

Set SATA configurationto AHCI mode

4. Finally, press F10 to save this change and exit.

Method 10: Perform a System Restore

1. Put in the Windows installation media or Recovery Drive/System Repair Disc and select your language preferences, and click Next

2. Click Repair your computer at the bottom.

Repair your computer | A disk read error occurred [SOLVED]

3. Now, choose Troubleshoot and then Advanced Options.

4. Finally, click on “System Restore” and follow on-screen instructions to complete the restore.

Restor your PC to fix system threat Exception Not Handled Error

5. Restart your PC to save changes.

Recommended:

  • Enable or Disable Thumbnail Previews in Windows 10
  • Fix Windows could not automatically detect this network’s proxy settings
  • Fix Non-System Disk or Disk Error Message
  • Change Lock Screen Timeout Setting in Windows 10

That’s it you have successfully Fix A disk read error occurred [SOLVED] but if you still have any questions regarding this post then feel free to ask them in the comment’s section.

Fix A Disk Read Error Occurred with 7 Solutions in Windows 10/8/7

You will be asked to press the Ctrl+Alt +Del to restart. However, most times, it won’t help, and you won’t be able to boot your computer correctly. The issue has infected a large number of users in Windows 10/8/7/XP. On this page, we have collected seven ways that said to be the most effective solutions to fix a disk read error occurred

Workable Solutions Step-by-step Troubleshooting
1. Back Up Data Without OS Download and Install EaseUS Todo Backup on the working computer. Click Tools…Full steps
2. Check SATA Cables Try a different port for the SATA/SATA M2 cables. If you have more than one HDD…Full steps
3. Run Surface Test Run EaseUS Partition Master, right-click the disk you want to check…Full steps
4. Repair MBR Download and launch EaseUS Partition Master on a new PC…Full steps
5. Other Effective Solutions Run bootrec > Check RAM Memory > Reset or Update BIOS…Full steps

A Disk Read Error Occurred Press Ctrl+Alt+Del to Restart

As a computer user, you may get many errors that prevent you from accessing your hard drive or data. Among them, disk read error is the most frustrating one. When it appears, you will receive the following message: “A disk read error occurred. Press Ctrl+Alt+Del to restart“. It is a common error that you can encounter and it indicates that Windows detects a hard disk problem or the process of reading hard disk goes wrong. Restart the computer by pressing Ctrl + Alt + Del cannot fix the error and you can still get the same screen. 

a disk read error occurred

Fix 1. Back Up Data Without Boot into Windows (Protect Data)

It would be an easy job to fix the “A disk read error occurred” issue. But the problem is that most users have essential personal stuff on the hard drive. So, they are puzzled about how to protect their files. You know, some troubleshooting steps might do lousy damage to their data and finally result-in irreversible data loss disaster. 

Because of this, we recommend you to back up data first. You can export the data, and try to restore data on another healthy computer. Here is an example of creating a backup without booting into Windows 10/8/7/XP.

To boot into Windows without OS, you need EaseUS Todo Backup with bootable Media. With it, you can back up and export data even when the operating system fails to start or crashes. Download and install EaseUS Todo Backup on a healthy computer and export data without booting into Windows.

Also read: Recover Data from Corrupted Windows OS

Fix 2. Check Hard Disk SATA Cables to Fix a Disk Read Error

Damaged SATA cables can cause “A disk read error occurred” issue. So, try the following tips to fix the error if the above methods don’t work.

Step 1. Try a different port for the SATA/SATA M2 cables.

Step 2. If you have more than one HDD, leave only the HDD with Windows installed and test multiple SATA ports and cables.

If there is something wrong, the faulty cables will need to be replaced to fix “A disk read error occurred”.

Fix 3. Run Surface Test to Check HDD If Disk Read Error Occurred

If your hard drive has a bad sector, it could cause “a disk read error occurred” issue during the process of computer startup. You can run a professional partition software to check your hard drive for bad sectors. 

To make it, you need EaseUS Partition Master to create a bootable USB flash drive or CD/DVD. Then, restart the computer from the bootable device you just created. Follow the steps to check bad sectors:

Step 1. Open EaseUS Partition Master. Right-click the disk that you want to check, and then click “Surface Test”.

Step 2. The operation will be immediately performed and all bad sectors will be marked as red.

If there is a bad sector, take out the hard drive. Connect the hard drive to a healthy computer and fix the bad sectors.

Fix 4. Repair MBR to Resolve Disk Read Error

If you also meet the “A disk read error occurred” error message, it suggests that BIOS is not the problem. Then try to rebuild MBR  with EaseUS partition software. Follow the steps below:

Step 1. Create a WinPE bootable disk

  • Launch EaseUS Partition Master, and click “Bootable Media” on the toolbar. Select “Create bootable media”.
  • Click “Next” to finish the process.

create a bootable disk

Step 2. Boot EaseUS Partition Master Bootable USB

  • Connect the bootable USB or CD/DVD to your PC. 
  • Press F2 or Del when you restart the computer to enter the BIOS screen. Set and boot your computer from “Removable Devices” or “CD-ROM Drive”. And then EaseUS Partition Master will run automatically.

Step 3. Rebuild MBR

  • Click “Toolkit” and choose “Rebuild MBR”.

rebuild MBR

  • Select the disk and the type of MBR. Then, click “Rebuild”.

rebuild MBR

  • After that, you can see “MBR has been successfully rebuilt on Disk X”.

rebuild MBR

Fix 5. Run Bootrec to Fix A Disk Read Error Occurred

If the bootloader installation or configuration comes with some errors, you can also meet “a disk read error occurred press ctrl+alt+del to restart” error.

You could solve this error by following the steps below.

Step 1. Press Win+R to open the Run dialog. Type cmd and click “OK”.

Step 2. In the Command Prompt window, type those following commands and press “Enter”.

bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd

Step 3. Restart the system and let bootrec repair MBR.

Fix 6. Check RAM Memory to Fix a Disk Read Error Occurred

Sometimes, a read disk error is related to a faulty RAM stick or RAM slot. If you have added new RAM memory to your computer, you can try this way. 

Step 1. Remove the new RAM modules you’ve recently added.

Step 2. Leave only one single RAM module.

Step 3. Restart the computer.

You can also download a professional RAM test tool – MemTest86 to test your RAM (https://www.wikihow.com/Test-PC-RAM-with-MemTest86).

Fix 7. Reset or Upgrade BIOS to Fix a Disk Read Error Occurred

You can also try to reset BIOS to fix disk read errors. Some people say resetting your computer BIOS to default or upgrading to the latest version might be able to solve “A disk read error occurred” in Windows XP/7/8/10. Follow the steps below to reset BIOS:

Step 1. Restart the computer

Step 2. Press F2, F8, F12, Esc or Del to boot into BIOS

Step 3. Find the option to reset BIOS to default.

reset BIOS to fix disk read error

The option name varies depending on different computer manufacturers and BIOS versions, which can be “Load BIOS Defaults”, “Load Setup Defaults”, “Load Default Settings”, “Load Fail-Safe Defaults”, or “Get Default Values”. 

Conclusion

These practical solutions may have got you out of your Disk Read error. When a hard drive fails or gets severely corrupt, you need to replace the hard drive. You can turn to EaseUS disk management tool to upgrade to a larger hard drive.

A Disk Read Error Occurred in Windows 10/8/7 FAQs

You have learned the seven ways to troubleshoot a disk read error. If you still have problems, you can read these topics below.

How do I fix a disk read error?

There are seven ways to fix a disk read error:

  • Back Up Data Without OS
  • Check SATA Cables
  • Run Surface Test
  • Repair MBR
  • Run Bootrec
  • Check RAM Memory
  • Reset or Upgrade BIOS

Can external hard disk be repaired?

Yes, you can. As long as the external hard drive is not physically damaged, you can repair bad sectors or other external hard drive issues with ease.

How do I fix a corrupted external hard drive?

To Repair Corrupted External Hard Drive:

  • Restore Corrupted File System
  • Recover Data
  • Repair Corrupted External Drive
  • Repair External Drive without Formatting

Last Updated on June 17, 2021 by

Call of Duty Modern Warfare 2019 PC version is facing errors like Dev Error 6071, Fatal Error, Dev Error 6068, high CPU usage and more. Here I have compiled a list of errors and issues that players are experiencing along with their possible fixes and workarounds.

Call of Duty Modern Warfare is a reboot that aims to revolutionize the COD franchise. With a completely revamped game engine, COD Modern Warfare features some of the best visuals of this generation.

However, the PC version of the game is facing errors and issues especially after the launch of Moder Warfare Warzone like Dev errors, 100% CPU usage and more. The following are the errors and issues that players are experiencing along with their fixes and workarounds.

Dev Errors Fix

Players are experiencing Dev Error while playing Call Of Duty Modern Warfare. These errors range are 5761, 6065, 6068, 6071 and more. These errors can be resolved by just giving the game administrative rights.

Right-click on the game’s exe file> Properties > Compatibility > check “Run this program as an administrator” and hit apply. This should resolve the Call of Duty Modern Warfare crashes.

However, this is just a generic fix and this doesn’t resolve the crashes then refer to individual fixes below.

Fatal Error Fix

Players have noted that when they try to play Call of Duty Modern Warfare they get the “Ftala Disc read error [5.0]: ‘ui.ff’”. There are a couple of fixes for this error that might work for you.

The first fix you should try is to clean boot your PC, After that, Call of Duty Modern Warfare will start running. If this doesn’t work for you then just scan and repair the game files and it should work fine.

Disk Read Error [5.0]: ‘common_mp.ff’ Fix

This is another Call of Duty Modern Warfare error that PC players are experiencing at launch. This error is most probabaly popping up for those who have overclocked their GPU.

Just revert back to GPU’s default clock speeds and disable any anti-virus program you are using. This will resolve the error.

Memory Error 01796 Fix

This is a rather strange error that Modern Warfare players are experiencing. Follow the steps below to fix this issue.

  • Update Windows, search for updates until it’s done for sure
  • Delete GPU drivers and download the latest driver updates for your GPU from the official site, don’t use Geforce Experience. Do a clean install.
  • Go to display options and run the game in full screen windowed.

Fatal error – Dev Error 6065 Fix

This is another Call of Duty Modern Warfare error that players are experiencing. However, this error is popping up due to the latest GPU drivers, just roll back to an older GPU version and the error will be resolved.

Dev Error 6071 Fix

This is another Fatal Error popping up for COD Modern Warfare players. One reason that you might be getting this error is probably due to an overclocked GPU.

If you have overclocked your GPU or own a factory overclocked GPU then revert it back to its default clock speeds and the issue should be resolved.

Dev Error 6165 Fix

This COD Modern Warfare error can be fixed by reinstalling the game and clean install your my GPU drivers. At the time of writing, there is no other workaround for this DEV Error 6165.

Crash Fix

With the launch of Modern Warfare Warzone, many players have reported random crashes while playing the game. Here is how to fix Modern Warfare Warzone crashes.

The first fix is simple. With the Warzone update, for a lot of players, Modern Warfare’s priority is set at High. Start the game and then open Task Manager > Details tab. Right-click on the Modern Warfare exe and set priority to Normal. This will fix the game’s cashing issue.

If the game is still crashing then close Blizzard client. Open Task Manager and if you see agent.exe running, terminate it. Now press “Windows + R”, type %ProgramData% and press enter. A new window will open and if you find a Blizzard Entertainment folder then just delete it. Start Battle.net and verify game files. This will resolve the crash at launch issues for you.

Dev Error 6068 Fix

According to Call of Duty Modern Warfare players, they are experiencing “Dev Error 6068 – DirectX encountered an unrecoverable error” while trying to play the game. To fix this error, make the following changes.

  • Turn off Nvidia overlay through Geforce experience
  • Set game to Windows borderless
  • Set refresh rate and FPS limit to match my monitors
  • Made sure you have latest Windows Update
  • Turn off GPU overclock and reverted back to stock clocks
  • Turn off XBOX Game Bar
  • Turn off RTX
  • Turned off MSI Afterburner and all other overlay apps
  • Set game to HIGH CPU PRIORITY on Task Manager
  • Set particles setting to Low

If you don’t like reducing the game’s settings then you can potentially resolve this issue by locking Call of Duty Modern Warfare at 30 FPS. Open Nvidia Control panel > Manage 3D Settings > Program Settings.

Select the game from the list and set vertical sync to “Adaptive Half Refresh Rate”. Apply the change, start the game and disable Vertical sync in-game and the game will be locked at 30 FPS. This will reduce the CPU and GPU usage resulting in stable performance.

Crash At Launch Fix

According to Players, when they start Call of duty Modern Warfare it just crashes at launch or doesn’t launch without any error. Here are a few fixes that might help you.

One reason for the game to crash at launch could be your anti-virus software or Windows Defender detecting the game’s exe as Trojan. Either disable your anti-virus software or make an exception for COD MW exe in your anti-virus software and the issue will be resolved.

If this doesn’t work for you, then the culprit might be third-party monitoring software like MSI Afterburner or GeForce Experience. Disable these and the game should work fine.

However, if you were using MSI Afterburner and disabling it hasn’t solved the issue then follow the steps below.

  • Open RivaTuner Statistics Server(RTSS).
  • Click the Add button and navigate to the game’s folder.
  • Add Call of Duty Modern Warfare’s exe under Application profile properties.
  • Set Application detection level to None for the game application.
  • Close RivaTuner Statistics Server.

100% CPU Usage Fix

To fix 100% CPU usage for COD Modern Warfare, go to “C:\Users\ YOUR NAME \Documents\Call of Duty Modern Warfare\players”.

Here you need to edit two files namely config.cfg and config-C7XXXXXX.cfg. Open these files and look for “setcl 895653276”. Now check that the resolution in front of this line is the same as your monitor’s display resolution.

If it’s set to a high resolution then change it to your monitor’s native resolution. Save it and run the game and the 100% CPU usage will be resolved.

If the set resolution is the same as your monitor’s native resolution, then you can try locking the game at 30 FPS to reduce the CPU usage. Open Nvidia Control panel > Manage 3D Settings > Program Settings.

Select the game from the list and set vertical sync to “Adaptive Half Refresh-Rate”. Apply the change, start the game and disable Vertical sync in-game and the game will be locked at 30 FPS.

Reportedly, COD Modern Warfare 2019 sets its priority to high by default which causes the CPU usage to increase. One potential fix for this is that start the game and then open Task Manager > Details tab. Right-click on the game’s process and set priority to “Normal”.

That is all for our Call of Duty Modern Warfare fixes for errors like Dev errors, crash at launch, Fatal Error, Dev Error 6071 and more.

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