Motherboard:Intel DX58SO with BIOS latest bios update (worked fine) AA e29331-701
CPU:Intel i7-920 (2.67GHz) no overclocking
RAM:Kingston 1066 DDR3 RAM (total 6GB)
OS:Windows 7 Ultimate 64-bits
Video:nVidia GeForce 6600 on PCIe x16 slot
Hard Disks:3x 1TB working hard drives
Optical Drives:2x ATAPI DVD Rewritters
Fans:CPU + Video card fan + Case fans (aux, rear, side, bottom)
PSU:raidmax RX730ss 730watts
I had a nvidia gts250 1 GB graphics card and it stopped working. I tried a temporary working nVidia GeForce 6600 and 2 or 3 other cards I could find with different power ranges. Only cards that do not need the 6pin power connector works and only if I do not give power to the auxiliary power connecters (either the 4 pin molex or the sata one). One of the cards I tried is the nvidia gtx460 but the fans start and everything and no visual. If I connect a smaller card in the primary slot and the external powered one in the secondary pcie slot bios tells me it picks it up. Any advice or help?