Windows 10 Laptop or Desktop SSD Disk Read Error (Solution)

When you try to start Windows on your normal SSD or HDD, you see an error message that says: A disk read error occurred. Press Ctrl + Alt + Del to restart . This can also happen when you try to boot to a bootable USB flash drive.

A “disk read error” can occur when you boot from your SSD, HDD, USB flash drive, or any other bootable media, regardless of whether the media has a Windows 10, Windows 7, Windows 8, or Windows XP operating system. It can also happen on a laptop or notebook from various manufacturers, such as HP, Toshiba, Dell, Asus, and Acer.

Sometimes he disk read error A se It occurs with other errors such as bootmgr is compressed, error code c00000b5 and c0000185 that can occur during the upgrade or installation of Windows or other operating system or software. In rare cases, when you try to create a virtual HDD on VMware virtual machines using Disk2vhd, it may also appear a disk read error .

Solution: Windows 10 disk read error occurred

Understanding the problem

The message of disk read error occurred it means that your computer cannot read the disk that your BIOS set to boot first due to a disk error. Many different reasons can trigger this particular boot error. There is no guaranteed solution to this problem, but most of the time it indicates a hardware error.

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Here’s what you can do to fix the error and check whether or not it’s a hardware problem.

Unplug all USB drives, DVDs, and other external media

Unplug any USB flash drive from your PC and remove the DVD from the player. Then try restarting your computer again.

This is to ensure that your computer does not boot to a drive that is not what you want to boot. For example, you want to boot to your hard drive where your Windows was stored, but the BIOS boot priority is set to boot the USB drive first. In that case, when a USB drive plugs in and encounters the chip, it will boot first and may cause a disk read error A if the USB is not a bootable drive or is just broken.

Alternatively, you can check the boot sequence in your BIOS by pressing OF THE or F2 as soon as you start your computer. Then look for a setting that is usually called Boot Sequence or Boot Priority . Make sure the desired drive is selected to boot first.

If your intention was to boot to a bootable USB flash drive in the first place and the computer shows a disk read error, it means that the USB boot was not configured correctly or the USB flash drive is broken. Try using other software to create the bootable USB drive.

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Turn off your computer and let it cool down

I’m sorry to say this, but most of the time when you see a disk read error A when starting your PC, it means that your SSD or HDD has failed or is starting to fail.

If you’re lucky, a long break for your PC and HDD can temporarily prevent the error. An abnormally high temperature in your hard drive can prevent it from working and cause a disk read error A when starting.

So, try shutting down your computer and let your HDD cool down for a few hours before restarting it. When you can finally boot into your Windows after cooling it down, back up all your important files and everything you can as soon as possible. When the HDD heats up again, it can trigger the same or other disk errors. In this situation, it is quite possible that the HDD will fail at any time and when that happens, you will never be able to start it again.

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Try replacing the hard drive cable

Defective or loose hard drive cables can also cause the disk A read failed error. Check if the hard drive cable is clamped at both ends. Also, try replacing it with a replacement HDD cable. If you don’t have a replacement SATA HDD cable, you can temporarily remove the cable from another computer and test it on this problem computer.

“There was a disk read error” appears randomly

If the error appears randomly, which you can sometimes see the Windows 10 loading logo but can’t start it, try to force boot into Windows Recovery Environment. You can do this by pressing and holding the power button on your computer until it shuts down completely. Start again and repeat the shutdown force for 3 times.

If you can start Windows Recovery, use the command prompt tool to run the CHKDSK command to check if your HDD or SSD has disk errors. In addition, you can also run bootrec commands to repair the master boot record (MBR) which directly affects how disk reading works in Windows 10. For more information on how to do this, read: How to repair Windows 10 using command prompt.

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