What could be causing my blue screen?

[Radar]

I forgot to mention, when you are tapping on the F8 button, another thing you'll want to do is select "Last Known Good Configuration" and that might fix you right up.

If none of this works, you may have a corrupted boot sector or missing bootup files. To fix this, put your Windows XP, 2000, or NT disk into the computer. Boot up to the CD and select repair. Then when given the opportunity, choose "Console".

It will ask you to select which version of windows you want to logon to, type 1 and enter. Then type in the admin password (if you have a password to logon enter it, if you don't just hit the enter key).

Once you get in there type the following

fixboot (then hit the enter key and type y to confirm)
fixmbr (then hit the enter key and type y to confirm)
chkdsk c: /R (then hit enter and type y to confirm)
exit (then it enter to reboot)

After the reboot, it will scan your hard disk looking for bad sectors. If it finds them, it will try to recover any data, and remove the bad sector from your drive map so no data will be saved their again and you can avoid further problems. This takes awhile depending on how large your drive is.