Question about "a disk error has occurred"

efx2001

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Feb 13, 2011
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One day I left my desktop on so it could do a virus scan and when I returned back about 1 hr later I saw that the screen was black and has this error "A disk read error occurred. Press CTRL-ALT-DEL to restart". I restarted desktop and it posted fine but still shows disk error right after that. Does anybody know what is causing that or is the disk starting to fail. Please help if you can. Thanks! 😀
 
If you're getting warnings on boot that a disk error is detected, and the machine continues to boot, you may be getting a S.M.A.R.T warning, which is a preemptive warning that your hard drive is starting to fail. You need to back up your data NOW and replace the drive.