Any suggestions...?

I recently upgraded to an Athlon. Paired with a K7M m/b and TNT2 Ultra card, all my 3D games always lock-up now and requires a cold reboot.

My system spec:
Athlon 500
Asus K7M m/b
128MB PC100 Apacer ram
Hercules TNT2 Ultra card (tried with drivers v2.08 and ref v3.68)
SBLive Value (with LiveWare 3.0 drivers)
300W power supply

Thanx.