My computer has recently started freezing during a variety of games. The screen goes black the keyboard doesn't respond and if there is sound playing when it freezes the speakers make a horrible noise. I have tried pretty much everything I could from updating driver to clearing my hardrive and reinstalling windows but nothing has helped. I think there must be something wrong with some of my hardware. How do i go about trying to diagnose which piece and whats wrong? I cant even replace it since i have no idea whats failing..