Place a windows cd in PC. When boot it ask "press any key to boot from cd. When I press any key windows set up starts. Now here is the problem when it get to the next screen if yuor'e num lock are on the light goes dead and when it ask you to press enter to set up windows the are reaction on the key board you can press any key nothing work. If tried 5 different key boards ps2 and usb one stage I had to key boards connect to the PC still the same problem. I even went into the bios and load safe default settings still nothing. Is there an other way to format with out the key board.

Disconnect anything else you have attached to the computer

Just have the keybaord, mouse and monitor attached and see if that helps

No printer, etc...