I'm in socal and the recent heatwave has been unbearable and recently I just upgraded my CPU to a 2.9 GHz AMD Athlon 64 X2 Dual Core Processor 5600+. Now since then my computer randomly restarts itself and freezes out of no where when I'm doing the most menial tasks, such as just having Firefox open. At first I thought it was overheating due to my house's AC being broken at the moment and the immense heat, but my cpu temperatures read as 40 degrees Celsius most of the time and most of the other temperature readings seem fairly normal, except my Nvidia 8800GT that has an idle temperature in the 70s but I chalk it up to the heat. Besides I find that Nvidia says it's ok to run at that temperature. In any case, if it wasn't temperature I thought it might be my psu starting to fail, so I gave it good cleaning out since I haven't done so in a while, yet the problem persists. Does anyone have any ideas or suggestions? Maybe I installed my CPU badly?