ok someone help I'm stumped. friend gave me his old pc, has amd fx6300 cpu, asus gtx750TI gpu, 4 sticks of ddr3 ripjaw 4g RAM, and a MSI 970A-G43 mobo.. my problem is I cant get an input signal on my monitor. all in all ive checked the graphics card in my PC works fine. ive put my graphics card in his PC, no input signal. ive reseated the RAM and even switched which slots the sticks sat in. which leads me to think that maybe the mobo is bad? please help