Does the keyboard work once booted into an OS
yep works perfectly.Does the keyboard work once booted into an OS?
Nope nothingWhen you hook up an external keyboard, can it get into any boot menus?
Still nothingTake out the RAM stick. Count to 30 slowly. Put it back in and power it back up. It may be the firmware preventing it from happening and for some reason, this trick just might work.
While you’re in there, make sure the keyboard is firmly connected. You just never know.