WeaponX 0 Report post Posted July 21, 2006 This is just a problematic machine. It wouldn't boot up at all previously until I replaced the power supply. After doing that it went on and started the boot process. I thought that was an easy job. Then after it finishes loading the Windows 2000 progress bar, I get a window asking me to run chkdsk. At this stage, whether I run it or not, it will freeze in this screen. Then after a short while, the famous blue screen of death will come out with the following error code: c000021a Unknown Hard Error I tried to find this error but can't. Googling only shows that c000021a message for Windows XP and that unknown hard error has some other stop message instead of the c000021a. Could a corrupt operating system cause this problem? Or is it a failing hard drive or motherboard? Thanks. Share this post Link to post Share on other sites
Daming 0 Report post Posted April 4, 2007 1.check your cpu fans 2. clean the memory3.use dos -scandisk/all/autofix/nosummary4.If this is not effective ,maybe your memory is broken.. Share this post Link to post Share on other sites
WeaponX 0 Report post Posted April 4, 2007 Forgot to post an update back on this issue. The problem was resolved. I think the hard drive had to be replaced in the end. Share this post Link to post Share on other sites
