Hey all, so I just got home from a LAN party and hooked everything back up. I hit the power button and there's a loud crack. Well damn. So I open it up and watch the PSU as I power up again. It begins to boot, then CRACK CRACK CRACK, the PSU fan goes into overdrive, anddddddddd dead.
So I grab a 500W I have laying around, unhook extra HDs, take out my HD5870s, and throw in an HD4890. Mobo lights come on, but when I hit the power button on the mobo nothing happens. So I took out the card and hit the power button. It boots. So I figure, well I'm pushing it with the available wattage, I'll try an old GeForce 8600 so that my system is needing 350W max load. Still nothing. But again, whenever I take out the GPU it boots.
My system specs if it helps:
ASUS P6T Deluxe v2 mobo
1366 socket i7
(Normally 2 HD5870s) But can do with one or two HD4890
120GB SSD boot drive
500W PSU (1000W on the way)
3 sticks of 2GB DDR3 2000
So sad to see good parts go! If it burned out the port there is a chance that the card is still fine. Not sure if the port controllers are on the NB or the CPU. Modern CPUs have a lot of protection, so you may just need a new mobo.