I put together my PC. It did one long beep then two short beeps. My monitor is not recieving a signal. I've tryed resetting the VGU. Someone mentioned it was a PSU problem and i'm looking into that now. He mentioned i needed a +12V118/+12v218. Any other ideas as to what the problem may be?
Mobo - DS3
CPU - E6300
VGU - 7600 GT
Mem - 1g 1.9V 6400
PSU - Thermaltake 430W
Try the system with one stick on memory, and remove any other pci cards apart from your graphics card, is the cpu fan plugged into the mobo? As the previouse poster said check the beep codes at the back of the manuale
"Beeeeeeeep Beep Beep" or "one long beep then two short beeps" usually means no video card installed. But if it's installed please check if it is seated properly, also try another video card cause yours may be dead or incompatible.
I build a system like yours and it seems that the motherboard refuses to work with / detect some video cards but i can't figure out why is that. After some testing I noticed that if you reset the system several times it begins to work out of the blue. I have emailed gigabyte about this problem and I await their answer.