I have a Dell pc in my chamber to back up files or downloading. WHat ever, my friend computer was bug so I did help him to formate his pc and re-install windows.When I did plug my DELL keyboard into his pc with my mouse too , my keyboard got bug right after plugging it on his pc. I've tryed it back on my dell , Imac , Mac pro ... Doesnt working anymore ... But The CAPS LOCK and NUM LOCK key are on ( Green light ) .. so wtf happen ? My keyboard is broken ? Never seen that before , thanks if anyone can help me ! Note : Mac keyboard worked on my friend AMD pc and didnt bug.