Windows ME.
I put the computer into safe mode and the scandisk worked, (yay! thanks for that suggestion) saying that it found no errors. I then tried to run the defrag again but it still says the disk has errors. I ran it without checking for errors and it completed, but I'm concerned that I still have errors on the drive.
Also, I get errors every now and again or the computer freezes and I have to reboot.
Thanks so much for your help