The "A disk read error has occurred" error is an extremely dreadful mistake message that appears every bit before long as a computer boots up and does not permit an affected computer to boot into its Operating Organisation, substantially locking the user out of the computer. In its fullest form, this error message reads "A desk read error has occurred. Press Ctrl+Alt+Del to restart." Affected users are met with the "A desk read error has occurred" mistake no thing how many times they reboot their computer as this is not an issue that can be stock-still by a unproblematic restart.

The "A deejay read fault has occurred" error message points towards a problem with a estimator'southward hard drive or issues during the procedure of reading said difficult drive. However, the bodily cause of this issue varies from one affected reckoner to the other and tin can be anything from a hardware issue to a software issue. This is why there is no set resolution or fix for this effect. However, at that place are quite a few dissimilar solutions that y'all tin can try out in order to attempt and fix the issue on your own, and the following are some of the near constructive ones:

How to Kicking into BIOS to change Boot Order

You must know how to boot and alter boot gild since this will be needed to perform the solutions beneath. Restart your estimator. Enter your calculator's BIOS (or UEFI) settings as before long equally it starts up. The primal that y'all demand to press to enter these settings depends on the manufacturer of your calculator'south motherboard and tin exist anything from Esc, Delete or F2 to F8, F10 or F12, usually F2. This is displayed on the mail screen, and the manual that was supplied with your system. A quick google search asking "how to enter bios" followed by model number volition as well list results. Navigate to the Kick.

Solution 1: Check to see if your hard disk drive has failed or is declining

A failed or failing hard disk can also exist the root of this event. To check to run into if y'all hard disk drive is failing or has failed, you need to: Go here and download an ISO file for Piece of cake Recovery Essentials. Burn down the ISO file to a CD/DVD or a USB using MagicISO or other free burning software. Insert the media into the affected computer, restart it and and so kick from the media. Click on Automatic Repair. Click onContinue.

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Wait for the Automated Repair to be completed. In one case the procedure has reached completion, you volition exist informed if either your hd or RAM has failed or is failing. If yous find that your HDD really has failed or is failing, replacing information technology with a new i and and so starting over with a new installation of Windows should prepare the "Reboot and select proper boot device" problem.

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Solution 2: Exam your RAM

As odd as it may sound, the cause of the "A disk read error has occurred" trouble in your case might not even be remotely related to your hard disk drive and may be a faulty RAM stick or RAM slot instead. Since that is the instance, it would be all-time if the outset solution you attempt out is to perform a completely non-destructive and exclusively informative exam on your estimator'southward RAM. To practice so, you need to:

Go here and download an ISO file for the version of MemTest86+ that is appropriate for your version of the Windows Operating Organization.

Burn the ISO file to a CD/DVD or USB.

Insert the bootable media into the afflicted figurer, restart information technology and then kicking from the media.

Run a diagnostic test on your computer'southward RAM.

If MemTest86+ finds whatsoever errors during the test, your computer'south RAM or RAM slot(s) may be faulty. Since that is the case, try substituting RAM sticks and inserting your electric current RAM sticks into different RAM slots to decide where the problem lies. One time you have determined whether the problem is a RAM stick or a RAM slot, prepare the problem, and the "A disk read error has occurred" error should be resolved.

Solution ii: Bank check on your hard drive'southward IDE cable

The IDE cable is the wide slice of wiring that connects your computer'southward difficult drive to your figurer's motherboard under its hood. A loose or defective IDE cable, as rare as information technology is, can as well cause the "A disk read error has occurred" error to occur. To rule this out as a possibility, simply open upwards your computer'southward hood and check to make certain that the IDE cable is securely fastened on both ends. You tin can likewise replace the IDE cable entirely in case you remember that your current one may exist faulty.

Solution 3: Connect your hard drive to a different computer and check it

The "A disk read error has occurred" error can besides be born when your computer'due south hard drive actually is faulty, which makes it impossible for your reckoner to read information technology. Determining whether or non your hard drive actually is the trouble is pretty simple – all y'all need to practice is remove the afflicted' estimator's difficult drive, connect information technology to a working computer and boot it upwards. If the computer boots up into the Operating System successfully and does non display the "A disk read mistake has occurred" error bulletin, the trouble lies within your computer. If the error bulletin persists, the hard drive is faulty and will need to be replaced.

Solution iv: Defrag your hard drive

Although the chances of this solution actually fixing the "A disk read fault has occurred" error are meek, information technology is notwithstanding worth giving a shot. To defrag your hard drive, connect information technology to a working computer externally and and then use the built-in defragmentation utility that comes with Windows, or create and use one of the many available utility kicking CDs to defrag your hard drive. One time the hard drive has been defragged, endeavour to boot from it and see if the problem still persists. If the trouble still exists, motility on to the adjacent solution.

Practice NOT try this solution if you have valuable information on the difficult drive that you haven't backed up every bit defragging a difficult drive can consequence in loss of data.

Solution 5: Repair your boot sector and master boot record

Another cause of the "A deejay read fault has occurred" fault is a corrupt boot sector and/or corrupt master kick record. If one or both of these elements being corrupted is what are causing the outcome in your case, simply repairing them will do the trick and resolve the trouble.

Insert a Windows installation disc into the affected computer, restart information technology and then kick from the disc.

In one case y'all accept booted from the disc, and are on the Windows Options menu press R to enter the Recovery Console.

Enter the Administrator password for the reckoner.

Type chkdsk /r into the Control Prompt and but keep with this procedure if the control detects any errors or issues.

Now, type the following commands into the Recovery Panel Command Prompt, pressing Enter after typing in each one:

fixboot
fixmbr

Remove the installation disc, restart the computer and see if the trouble still persists.

Note: If you are trying to prepare this issue using this solution of Windows vii or Vista, in the Recovery Console Command Prompt, apply the following commands instead of fixboot and fixmbr:

bootrec /fixmbr
bootrec /fixboot

Solution 6: Reset your BIOS

In extremely rare cases, resetting their computer'south BIOS managed to set the "A deejay read error has occurred" mistake for people who take been affected by it in the past. To access your estimator's BIOS, simply restart the calculator and press a specific primal (depending on your motherboard's manufacturer) on the first screen that you run across when the calculator boots up. Look for an option that resets the entire BIOS to its factory default, and then utilise that option to reset your BIOS. Y'all can also remove the round CMOS bombardment housed in your computer's motherboard for 5 minutes to achieve the same effect.