I've built my own computer today and this is the first time I've built a computer. The computer will start but none of my USB products will work and neither will HDMI nor DVI-cables. I bought new parts for my computer because the display would not work, and I made sure that it was something wrong with the computer by trying the same HDMI and screen for my PS3, and there was no problem there. I just don't know what to do now to fix the inputs. (Mobo: z170-D. GPU: MSI gtx 1060. CPU: I5-6600K. Ram 8GB. Power:750W.)