My Guess is also a mobo and vid card uncompatible. Check your mobo to see if it says anything about what vid cards to use and what not to.
Ive had a little prob with the first vid card I got for my computer (winfast A250 something) a GeForce 4 Ti 4600. Second day the display goes blank and when I pop the case open. the card fried a small chip in it (u can see it melted). Then I got a replacement from the company, winfast, It happened again. I sent the card back, and got another brand (eVGA) GeForce 4 Ti 4600. Works good! (Motherboard uncompatible)
Yes, check Chaintech's site concerning BIOS updates and issues/incompatibilities with interface card's or other hardware.
The biggest incompatibility I had in the past was with the EpoX 8KHA+ mobo and the Visiontek GF4 Ti 4600, due to capacitors coming into contact with each other, but after switching to an ASUS V8460, all was quite well.