When I boot up my pc, the first thing that happens is it goes to the post screen. Then it asks you to press f1 to continue or delete to go to setup. This is how it has started up everytime, and I would just press f1 and continue with boot up successfully. Now all of a sudden, my wireless usb/keyboard doesnt work at all and neither does my wired usb or ps/2 keyboard. So, I can't even use my computer anymore because I can't get past the post screen. Any ideas?