I tried this, it didn't work. Thanks for the suggestionI have had that before, You need to use a normal keyboard and mouse as the drivers don't load. By normal I mean one that has no special drivers like Logitech, razer etc. something that you would most likely have used in school.
How does one log in without the use of a keyboardcan you get to the point where you've logged in? if so, unplug and replug them while in login screen.
Roll back any driver updates if possible
The keyboard works on BIOS if you read the post meaning that it is not the keyboard nor the USB.Try all the USB ports on your computer, if you haven't already.
Reset your bios by taking out your CMos battery (look it up, it's really simple)
Try the peripherals on other computers, see if they work.
Try a different mouse and keyboard on your motherboard or i/o, if that doesn't work than your USB ports have probably kicked the bucket.