Weird random problem

So I have a similar problem to the guy with XP freezing. I am not sure exactly where his is freezing. Mine is freezing after the XP loading screen. It doesn't even go to the welcome screen. It just stays black no matter how long I leave it. I am currently in safe mode trying to figure out what it is. I ran scans with S&D and Norton. Haven't found anything. This problem is completely random. I mean I recently had a HDD fail on me. And I am using the original HDD now as my master.

What I have is a XP SP2.
P4 2.6 GHz
1 gig ram
Radeon 9250
DVD drive
Some 120 Gig HDD don't remember what brand.
250 watt PSU

The computer is pretty much a stock Compaq computer from a while ago. I don't remember what year I got it. Also when I go into safe mode it says the admin password is different from what it was before I go into the welcome/login screen to choose a user.