GA-x79-up4 Blank Screen Startup! Please Help!

[leftyguns]

Please help! I just finished assembling my custom built PC, my GA-x79-up4 being the motherboard. I am  certain that all the plugs and cables are attached correctly (to include my video card and monitor). When I start up my computer I just get a blank screen. I can't use the keyboard (I tried different USB) to get to CMOS or BIOS. Please help!

[Gloup_Gloup]

Hi leftyguns,

Have you a possibility to find a PS/2 keyboard.
Is not expensive.... but very practical

Please describe with exact model your hardware configuration.

Have you hear a beep during a boot or Post sequence?
Have you a speaker on motherboard?
http://www.tomshw.it/forum/attachments/altre-discussioni-hardware/32450d1347190809-il-pc-non-si-accende-alimentatore-guasto-ba4225be_speaker.jpeg

Have you a error message? Or BSOD?