Startup/Boot Problems + BSoD

Okay so the other day I got a BSoD and my computer restarted, as usual following a BSoD. Well, now it's stuck on the boot up sequence. I've tried tk change the priorities of the boot sequences from CD-ROM to Hard drive and back again. When it's first priority is Hard Drive it gets stuck on "Verifying DRM Pool" or whatever it is (can't remember). If it's set to CD-ROM then it says "Boot from CD..." twice and gets stuck there. I've used the system disc and started a new installation, but cancelling it right away, PC restarts, gets to the log in screen and I log in, bam, BSoD. Then it goes back to getting stuck at the boot sequence unless I fake a new installation again.

Tried to put as much info as possible in here. Help would be graciously appreciated. I'm on Windows XP SP3.