When I try to play games such as Roller Coaster Tycoon 3, Lord of the Rings Battle for Middle Earth 2, Half-Life 2, or pretty much anything else the computer screen goes black. It does not restart but instead stays that way. I have also started to get just a completely blank blue screen. Also, in dxdiag, next to BIOS and system model it just says n/a.

Specs:
Ati Radeon 9600
1.5 gigs of ram
80g and 120g Seagate Barracuda SATA
MSI K8T Neo-FSR
Amd Athlon 64 3200+
Windows XP

The latest bios HERE
States that it is an update to Update CPU ID. - which may also mean DxDiag info

Live Update Online HERE
Info HERE
May be your best answer

Warning: updating your BIOS is a critical proceedure, that can render your computer useless if not done properly. All resposibilities and liabilities fall on you the user.

Live update automatically checks your system first, then asks for go ahead after that.

Latest update:
I finally had XP reinstalled, so now I have a completly clean computer. No dice, the games still keep crashing. I now believe it to be a hardware problem.

Other than Bios update - Do you think that you may try this ?

It could be a memory issue

Tutorial: How to use Memtest