When logging onto Windows 8 I sometimes lose connection to my montior.

Jaredman384

Honorable
Oct 14, 2013
24
0
10,510
My computer: AMD 7700k, RAM:4gb of GSKILL,Motherboard is a ASUS A55BM-E

I seem to be having problems at times losing connection in sometimes werid ways,like sometime right after I log on sometimes their is a werid black bar on the top of the screen as it is transitoning to the tiles and sometimes right as I get on to the windows 8 login screen. I have tried switching cables and re-stalling my drivers using my disk included and amd's website.I have also tried lower the resolution to the monitor that did nothing.
Can somebody please help me fix this annoying problem?