Gigabyte x79 UP4 may be DOA...any help appreciated.

moatt

Reputable
May 10, 2014
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4,510
Hey guys, thanks in advance for input on this. I'm pulling my hair out. I'm building a new computer for my boss. I've built dozens in the past, but I'm new to this job and he's always just bought Dells. I finally convinced him to let me build him a PC, since his Dell's haven't been powerful enough to work for him. Spec'd it out, got the parts in and was going to finish the install over the weekend. Problem is, when I fired it up, excitedly looking forward to the initial BIOS boot nothing happened. No lights, no sounds, nothing.

The PSU has a test kit that let's you unplug the MB 24 pin connector and plug a jumper in. When I do that and turn the PSU back on, the MB lights up, fans start spinning, DVD drive spins up, everything seems to be golden. But with the 24 pin plug back in the MB, nothing happens. I've tested continuity between the power switch pins from the case, and we're good there. I've tried bridging the power switch pins on the mobo, but still nothing. I've tried a dozen different things that I found searching here, including pulling RAM and trying different slot/RAM configurations, pulling the high end video card and putting a cheaper one in until I could get to the point of installing drivers, etc. I'm at a loss. I really don't want to have to tell my boss that I think his MB is bad and have him decide that we should've gone Dell again. Any help is so unbelievably appreciated.

Here are the specs:

Gigabyte x79-up4 mb
intel i7 4820k ivy bridge cpu
Fractal Design Arc XL case
Radeon R9 290 video card (the cheaper video card installed as troubleshtooting was a nVidia GTX 460)
EVGA SuperNova 1000 G1 1000W PSU
G.Skill Ripjaws Z series 4x8GB DDR3 2133 memory
2x WD Blue 1tb 7200 rpm hdd (will be RAID 0 through intel chipset)
Corsair h100i water cooler
Asus DVD burner

I've never had a computer I built not fire up, and I'm at a complete loss to what could be wrong. I've searched for hours, but there's no luck. Without that jumper in the 24pin from the PSU, nothing happens at all. I don't have an external speaker I can wire to the jumper, so I have nothing to listen to for BIOS beeps with. I have no other mobo's or cpu's at my disposal to test with.

Any ideas?
 

moatt

Reputable
May 10, 2014
11
0
4,510
Another question thing that's confusing about the build, the 24 pin wire coming from the power supply has a 24 pin connector and a 4 pin connector on it. I don't see anything that has a 4 pin slot on the motherboard. The secondary power connector is an 8 pin connector that I have hooked up to two 4 pin connector from the psu... Should it replace one of those?