Hello I have an Intel DX580G motherboard, and EVGA GTX 460 768Mb video card, and a 750w power supply. I'm getting an error code 75 on my readout on my motherboard and my computer freezes sometimes. Usually when I'm watching a video online or playing any flash game online. By freezing I mean the screen, mouse, keyboard and everything just stops responding and i have to turn it off by holding in the button. I have ran diagnostics on the video card and on the ram and both came out just fine with no errors. Any ideas on what may cause this? It ran for 6 months just fine with no error codes.
Also when I plug in headphones now, the main speakers no longer mute.