R.C., first off, I appreciate the help!
The computer will start up as it normally would. The WinXP
login screen will show, along with my user name (only one
user name, so I guess it would also be the admin), where I
then type in my password and press enter. The computer
will restart shortly after pressing enter or the desktop
will appear for a few seconds and then restart.
I haven't tried booting into safe mode, yet. I had to go
to work shortly after I found out there was a problem and
posted this.
I had a problem with WinXP a couple of days ago, where
WinXP wouldn't start up and it gave me an error message
saying there was a file missing or corrupt in the system
directory. I thought I had fixed it with my CD (the
computer started up just fine and I was able to use it).
But after shutting it down and starting it back up today,
the restart problem began.
Hope that's enough information. Thanks again!