I've been messing with this for days, tried 2 different cards, 3 different PSU's all with the same results. When I kick the power on, I hear 3 beeps, no video. My card I am replacing is a EVGA GeForce 8800GTX which works fine, but is obviously a shitty mining card.

This is an older system, so I've come to the conclusion that it is a problem with my motherboard. Please correct me if I am wrong.

Motherboard Model: MSI K9NBPM2-FID
Video Card Model: SAPPHIRE 100297-2L Radeon HD 5830 Xtreme
Current PSU: Antec HCG-520 520W

I've also tried the XFX Radeon HD 6950 in the same board with the same result as the 5830.

Any help is greatly appreciated.

Thanks,
   wyze