See the issues here... System Specs: Intel i5-750 Asus P7P55D-E LX LGA 1156 OCZ 550W Modular PSU 16 GB DDR3 (4 x 4GB) 2 x 250GB Seagate Barracudas in RAID1 1 x 1TB WD Caviar Black Asus DVD burner EVGA 512-P3-N841-A3 GeForce 8800GTS I had a pretty basic graphics card, that required no additional power, for a couple years with no issues. I bought two EVGA GeForce 8800GTS 512MB from a friend for real cheap when he was upgrading. So I decided to swap my cheap card with the 8800. I followed all proper procedure to working on a PC, anti-static wrist strap and all. I removed the old card and put in one of the new ones. Then I plugged in the 6-pin pci-e power to the card, next the motherboard (btw, I am using the pci-e power cable that my friend gave me with the gfx cards, I couldn't find the one that came with my PSU). I closed up the box, hooked everything back up and pressed the power button. Power LED flashed for a split second and shut right down. I pulled the power and opened the case and smelled a bit of burnt plastic. I pulled the card and looked around but I didn't notice anything wrong so I put the old card back in. PC booted like normal, but no video, even heard the windows log in sound. I tried an old pci gfx card in one of the plain pci slots and it worked fine. So afraid that I burnt out the card too I put it in an older PC, and no issues using the SAME power cable. I even added the other card and set up SLI and it is still working great. So, I took some pictures so I could blow them up on my other PC and see if I bent a pin or something and I noticed the burnt chips. I found the same mobo on ebay, a new one amazingly, and I ordered it for $90. It was hard finding 1156 motherboards! My question is, what do you think went wrong? When I get the new motherboard, do you think the same thing will happen? Is it possible that the pci-e cable wasn't compatible with my PSU? I know the cable works because I used it on another computer. Thanks for the help!