I have an issue with Windows7 which I can't seem to solve. Whenever I try to shutdown the computer (this is really shutdown, not sleep or hibernate), Windows7 performs the whole process of shutting down services, screen etc but the fans keep blowing. The pc becomes completely unresponsive (so keyboard, mouse, video stops working) but the fans keep running. The only way to get out of this is keeping the power button pressed for a few secs. Mainboard: Asus P5B-E with latest firmware I tried installing the Intel chipset drivers from the Intel site, tried windows updates, tried putting my harddrive on different SATA ports and switched the power settings (S1, S3 etc) in bios. I have Vista on a different harddrive than my Windows7 drive and Vista has no problem at all. Anyone got an idea what might be causing this?