Hi i have a problem with my hard disc on my windows 7 pc. My hard disc is Hitachi 500GB. When i play games or surfing in the internet the pc suddenly turns off but the computer still working,only the hard disc do not work and the red light didnt show up, so i noticed the problem its from hard disc. i dont know is it cuz its overheating or no. My temperatures on hard disc when i play games are max 43-4. i dont know is this temperatures are normal or no. I many times check the hard disc for bad sectors and fragmented files its still remain the same problem, i dont know what is going on with this hard disc. Please help me and give me sugestions what to do to get resolved it once for all !!!