I have a problem that I had before but cannot remember how I fixed it before. Windows will boot up fine. As soon as the system hits the desktop, mouse and keyboard do not work. They work in Safe Mode however and in BIOS. That tells me it is a device driver issue. It is a Clevo P157SM and doesn't have a "special" driver so I am using the p/s2 keyboard driver and the optical mouse driver but neither work. I have deleted the PCI bus system device and rebooted to get it to work (forces system to reload all drivers) and it works until it gets to the desktop. As soon as it hits desktop, it dies out again. Any suggestions?