No 3d Apps work!!!

I just installed my agit kg7-raid mobo, with a gig of crucial pc2100 ram, i formatted, reinstalled all of my drivers, but now not one 3d app will work, well, it'll work for a couple of seconds sometimes, and then lock up the system. nothin's overclocked, it could be that i don't have enough power goin' to everything, but i have no idea.

Tbird 1.4
ABit KG7-raid
Gainward Geforce 3
Western Digital 20 gig hd
Maxtor 30 Gig
IBM 75 gig
Creative 8X dvd
SBlive Platinum
1024 megs Crucial PC2100 sdram
3dcool.com tornado 3000 case w/300 watt

Hmmm. Could be a lot of things. Have you checked the CPU temp? 300W is plenty of power. Do you have a system accceleration option in your BIOS? If I enable acceleration, I get the same thing. Also, if you have fast writes enabled or sidwband addressing, disable & see if that helps. Maybe a hardware conflict, such as a force feedback joystick?

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1.113 TBird
A7A 266
256MB Crutial PC2100
Inno3d GeForce2 GTS
IBM GXP60 40GB HDD
Enermax 350W PS
Etc.