I have a friend that has a Windows 98 computer and it has not been defraged lately so I was asked to defrag her computer. Well I know some about computers so before I did this I turned off the screensaver, booted in safe mode, and ended all necessary background applications. I unhooked the cable modem too because someone once said that could cause problems. Defrag got over half of the way done and it gave me this error message that said DEFRAG005 so I looked this up on microsoft knowlegde base and it said to fix this I had to do a thorough scan with scandisk. Ok so I am faced with new challenges now. Back to safe mode I go and I choze to do a thorough scan. Well it didnt even get half way done and it froze up. No error message this time. It just froze and I had to restart the computer. Yes I attempted this when I wasnt in safe mode once too. Also I tried shutting down and entering DOS mode and doing a thorough scan. It froze at 21% all times I tried this. I tried CHKDSK because somebody told me I should do this and it didnt work. I also deleted all temp files and ran disk cleanup both. Any other ideas?