So I've built a new computer and everything seems to work( all the fans are spinning and motherboard lights are spinning) but I don't get a video signal? Any ideas? Maybe a DOA graphics card or RAM or even MOBO?
CPU: AMD FX 4100
VGA: XFX RADEON HD 6870
PSU: OCZ Zs 750w
RAM: GSkill Snipers 8GB (4GB x2)
This is your problem right here - you're using a 970 with the FX CPU. Update the BIOS on your motherboard before you install an FX processor on an older chipset. Even the 990FX boards have problems running the FX at first.
Asus tech support says you need BIOS version 0705 to run the FX 4100.
You're going to have to get a Phenom II or Athlon II Socket AM3 cpu so that you can update the BIOS to version 0705. That motherboard was most likely developed and manufactured before the FX Processors(Socket AM3+) were available and therefore the BIOS doesn't know how to configure itself to operate with your CPU.