Press the anykey...and when you find it....delete it. No really, unistalling the hardware...in the device manger will usually correct the problem...OR update the driver from microsoft...sometimes....that works.... Is it a nice USB microsoft keyboard? Get the drivers if it is....otherwise a regular startup with the keyboard unplugged (if it let's you) also helps...if it starts....let it sit there for a few after it boots....then shut down (with button or mouse), plug it back in...and startup.