Computer locks up

Specs:
K7VTA3 V3.X Bios 3.0d /w AMD 1700+
GeForce4 Ti 4200 w/ Detonator 44.03 driver
Windows XP w/ VIA v4.47 drivers

Problem:
Computer wigs out while running 3DMark03.
Meaning monitor "whites out" and have to reboot to regain control.

I have tested the GeForce4 Ti 4200 and 3DMark03 on another computer and it was able to finish.
Though when a Geforce 3 is installed in the K7VTA3 and re-tested it will lockup again.

I have ruled out the video card and the Detonator driver.
And I highly doubt it is the VIA drivers. (Though I could be wrong. Other computer is SiS chipset based.)

What’s left is the motherboard, CPU, chipset and RAM.
CPU temp runs about 50°C while running 3DMark03.
Which of those would be more likely to cause the monitor to "white out" and causes a lockup?

I might mention that K7VTA3 Bios 3.0c Fixed NVidia unstable problem. (Or did it?)

Thank you for any help/suggestions you can provide.

 

The RAM may be at fault, but you may want to see what you can do to improve cooling, too. 50° is not excessively high, but hotter than I would like. And it may be the canary in the mine about something else overheating.

You can always try the old method of removing the side of the case and blowing a fan inside to see if that eliminates the problem (or significantly delays it).

 

I have tried that but to no avail.

The case is all aluminum with 3 case fans plus the CPU fan.
In addition a couple of bay fans as well.

I would like it to run cooler, but running something like a delta CPU fan is just way too much noise and a water cooling system is just too much period.