How to enable usb keyboard in bios

Just make sure your USB ports are all enabled. If you have an older motherboard, this can be an catch 22 issue at times! I used to have an MSI board that disabled the USB ports by default. So if I cleared or reset my BIOS to defaults, I had to dig out an old PS2 keyboard and plug in to enter the BIOS and turn on the USB ports so my USB keyboard would work again!