hi, my pc is automatically restarting by itself.i formatted it many times thinking that a virus is causing this trouble.but still it keeps restarting, especially when i open picasa.i also tried changing the bios settings to default.please give me a solution. my configuration: intel g31gl mother board 2 gb ddr2 ram 250gb hdd 128mb integrated on board graphics dual core 2.0GHZ processor Thanks in advance.