cant boot into bios, no display

Re: http://www.techsupportforum.com/foru...ys-884361.html

^ ive done everything stated above. including using my gf's rig as a test subject, to no avail EVERYTHING works ( i did not swap cpu) to hers, i cant even boot into bios.
still HAVE NO VIDEO

AMD FX 8320 8-Core 4.0GHz
AMD R9 280 (HD 7950)
-8GB 1600MHz DDR3 Ram
-SeaGate 1TB SATA Hard Drive
-ECS A960M-MV AM3+ Motherboard
-600w 80 Plus Bronze Certified Power Supply
-NZXT Phantom 240 Mid Tower Gaming Case
-Windows 7 Home Premium 64-Bit w/ Certificate of Authenticity