Originally posted by: pdreed went with one of the ones compatible with my motherboard
Isn't your motherboard one of the few hybrid motherboards? It can eat all PCI, AGP and PCIe cards...
To answer the question, your issue sounds like a stablility issue. Either capacitors going bad on the motherboard, or you're overclocking too much or your PSU doesn't provide enough power. Of course it ccan be the card as well, but I don't remember ever seeing such symptoms for a faulty card. Regardless, you may want to replace the thermal paste under its cooler, it surely is getting old.
CPU: AMD Phenom II X4 810 @ 3120MHz | RAM: Kingmax 2x2GB DDR2 800 @ 833MHz| MoBo: MSI K9A2 CF v1.0 (BIOS: 1.D)| GPU: Asus HD 6850 1024MB (DirectCu) @ 835/1135MHz | Display: L24FHD | PSU: PC Power & Cooling Silencer 750 Quad | OS: MS Windows 3.11 Pro x64