I get this message on boot and of course F1 to continue and del to setup do not work.
I found this on Google:
"12.Keyboard error or no keyboard present Cannot initialize the keyboard. Make sure the keyboard is attached correctly and no keys are pressed during POST. To purposely configure the system without a keyboard, set the error halt condition in Setup to HALT ON ALL, BUT KEYBOARD. The BIOS then ignores the missing keyboard during POST.
13.Keyboard is locked out - Unlock the key This message usually indicates that one or more keys have been pressed during the keyboard tests. Be sure no objects are resting on the keyboard."
I have also used USB connection on same keyboard and a different keyboard (working normally on its PC) gives the same message.