I have had a shut down problem as well as a problem with my wireless MS mouse. Whenever I shut down, I get a BSOD. It happens so quickly that I can't read it but on every reboot, I am notified of a minidmp file being written. Another problem which has just recently occurred is that my mouse is not being recognized. I have used Revo to uninstall it and then I have reinstalled but it still isn't being recognized. I have used memtest and everest as well as cleaning the hardware as you suggested but the problem persists. Any help would be greatly appreciated. Thanks