I have an Inspiron 3800 that I recently installed WindowsXP on. The computer boots fine and works normally, except when i'm not doing anything on it. It will either completely lock up with the display still on or it will flash a blue screen for 2 seconds and reboot. It does this only when I am not running any programs or when i am using a web browser. When there is a program running that uses a lot of the processor or accesses the hard drive often there isnt a problem. For instance, when i turn on iTunes or any game this does not happen. Any ideas? I already updated my drivers and BIOS.