Hi, I need help from you to find the cause and fix the blue screen issue. As Long as I am working, The blue screen issue is not appearing. But when the System is Idle for 15-20 minutes, blue screen appears I could track down only some of the error because it disappear so fast and going to restart automatically. KMODE_EXCEPTION_NOT_HANDLED and also some tsddd.dll error. During Blue screen, If I click Esc button, the system comes to normal My Notebook details OS - Windows Vista Home Basic with SP1 Processor - AMD turion 64X2 1.6 Ghz RAM - 1 GB System Type - 32 Bit Operating System I am amateur and dont know much about OS. Kindly help me Step by step with simple commands and executions to track the issue and fix Dilip