[ObbiQuiet]

I recently bought a new system and put it together. My initial problem was when I started it up my monitor displayed a garbled image of color, let out a single beep, my POST code displayed 7F (check POST error and display them and ask for user intervention) and a few seconds after that it shuts down.

First attempt at a fix: I tried different monitors. Any HD monitor told me that it wasn’t getting a signal and normal ones merely displayed a broken image.

Second attempt: I switched around my two sticks of ram and put them in different slots. Sometimes it let out one long, singular beep.

Third Attempt: I tried moving my GPU into different PCI x16 slots.

Fourth attempt: I played around with the power for a long time. First I tried to rig it so I was getting as much power as possible to my GPU, then as close to possible to the power needed. I should be well in the clear in both volts and amps.

Fifth attempt: I took everything out of the case and assembled it like this: mobo, cpu, cpu fan, PSU, gpu, monitor. Still the same error without the case.

Sixth attempt: I replaced the GPU with a nvidia geforce 7350 LE. The monitor worked and bios started up without a hitch.

So I think so far I’ve identified that it involves the GPU, although the test card wasn’t ideal because it did not rely on a PCI-E connector from the PSU, so it still might be a power issue. Does anyone else have ANY ideas? I’d like to send for a GPU replacement as a last resort. I’ve checked and rechecked compatibility. Stayed up until 4 AM just reading every manual I have. Everything SHOULD work together. Still, if any tech savvy people out there could take a look at my rig, it would be really appreciated.

Also: Could I have some advice on how to proceed? I only have one SLI card. I might buy my second when I send my first one in for replacement. How does the SLI work? Do I have to buy the exact same SLI make, or can I buy a different one? Does it have to a BFG 8800 GTX OC, can I get it from a different manufacturer, or a different 8800 series card? I appreciate all help I can get.

Motherboard:
Evga 780i mobo
http://www.newegg.com/Product/Produc...Tpk=13-188-024

CPU:
Intel Quad core 6700 2.66 ghz
http://www.newegg.com/Product/Produc...Tpk=19-115-027

PSU:
Thermaltake Toughpower 1000w SLI enabled
http://www.newegg.com/Product/Produc...Tpk=17-153-053

Soundcard:
M-AUDIO revolution 5.1
http://www.newegg.com/Product/Produc...Tpk=29-121-122

Hard drive:
Raptor 150gb 10,000 rpm
http://www.newegg.com/Product/Produc...Tpk=22-136-012

Memory:
Corsair 2gb (1gb x 2) 800 DD2
http://www.newegg.com/Product/Produc...Tpk=20-145-177

Case:
Antec 900 mid atx black
http://www.newegg.com/Product/Produc...pk=antec%2b900

GPU:
BFG 8800 GTX OC
http://www.bfgtech.com/bfgr88768gtxoce.aspx

CD/DVD drive:
SecurDisk internal super multi.