When I boot up my computer my keyboard and mouse light up like they normally do but as soon as windows starts up my keyboard and mouse turn off and I can't sign in or do anything with them. They turn on when I boot up and I can access the bios but once I'm in to Windows they don't work. I've tried reinstalling Windows but even then it won't power my keyboard or mouse so I can't install it. I've tried using all the different USB ports and because everything works fine in the bios I'm assuming that this is a problem with Windows.