I built my computer about 3 weeks ago and I haven't had any real problems until yesterday.
I was playing Crysis 2 and after roughly 30-40 minutes it froze and this god-awful screeching came out of my TV speakers. The same thing happened today, playing Crysis 2. It has also happened after about 30 minutes of playing Morrowind.
I noticed that when it froze, the Ring of Light on the wired 360 controller I was using also went out.
I've used Auslogic's BoostSpeed to clean the registry and remove some junk files, among other things.
Could that have messed something up?
I haven't had this freeze up occur while using my computer to listen to music or browse the internet.
I have also updated my BIOS, hoping that would fix the problem. It hasn't, although my CPU is reading 20 degrees Celsius now, when it used to be 30.