I'm no good at things like this but just a couple of questions. Do you use Windows? Have you checked the keyboard is plugged in properly? I was going to suggest trying to go into safe mode but if the keyboard won't work then I'm not sure what you can do.
Hopefully someone who knows what they're talking about will reply to you soon lol!
Always back-up your photos, I learnt that the hard way once. I even load new photos up onto Photobucket just so that I have another copy of them somewhere.