I've yet to find a blown fan cause the keyboard to not blink on startup.
Why not model number? Not much to go on here so check that the keyboard is in the right connector.
My computer will not get passed the HP screen (with all the esc. and f-11 keys etc...) and when I tried to go into safe mode i noticed my keyboard wasnt working. (no lights on it at all) So ofcourse I switched out my keyboard and the same thing. Any suggestions? The person on it last night said she heard a loud noise and that was it...it turned off. I figured the fan or motor? Any ideas? Im desperate....Thank you