The other day I was trying to get rid of an account no longer used on my computer, an HP Media Center m7684v with XP Media Center Ed, 2.13 Core 2 Duo. So I went to the control panel, did everything, and chose to keep the files. The computer instantly froze, crashed, and restarted. It works fine, until I do that. I'd really like to get rid of the account, as it's wasting space, and I seem to remember the computer booted up and ran much more quickly with only two accounts (it's at about 2 minutes now, and even my iMac G4 700, already past obsolescence, is embarassing it, it's so sluggish). I ran Norton Security, Spybot S+D, Kaspersky's, came up with no viruses. Defragged twice, not a problem. Deleted about 100 GB of files. But when I try to remove the account, the computer freezes and crashes, no blue screen, just reboot normally back into Windows. I'd be happy to just use my Power Mac G5 running Leopard, but the HP is my dad's main machine.
IMPORTANT NOTE: I don't have a WinXP CD, as it came preinstalled. Recovery Console comes preinstalled as well, as does System Recovery. Tried both of them to no avail. Any suggestions you could give that wouldn't require purchase of a new disc, reformat, and reinstall? Thanks.
EDIT: To make matters worse, I did System Recovery again, and it rendered my system unbootable. Only starting in safe mode.