Not yet on the video card. But, as for an update: I ran burn-in tests for CPU Arithmetic Benchmarks, CPU Multi-Media Benchmarks, Membory Bandwidth Benchmark, and Cache & Memory Benchmarks. They all came up clear and computer never reset during this.
The computer has reset when I:
Tried to get a server list from UT2004
Shortly after beginning a system scan with Norton 2004
After loading a game called Horizons (went through splash screens and restarted just after UI came up)
I've tested:
My RAM. 1 stick had a single bad sector, took it out.
I've monitored:
My Vcore voltage, no spike or dip before restart
My Vio voltage, no spike or dip before restart
My +5 voltage, no spike or dip before restart
My +12 voltage, no spike or dip before restart.
As a second note: My power supply is only 3 months old. It is a Aerocool Aero-420P4 // Aeropower II
Thanks for all your help everyone, hopefully we'll figure this out. <tries not to pull out all his hair>
Mobo: Epox 8K7A+
CPU: AMD Athlon XP2200+
OS: Windows XP pro SP1
HD: WD 80GB
HD: WD 180GB SE
RAM: 2x512MB DDR 2100