[Jawz]

You sure your laptop isn't disconnected (this may be a hardware problem) If any software and driver updates don't work and you're sure you've tried everything then by all means get someone to open it up and replug the laptop from within the laptop in again. This happened to me before whereby some keys would work and most wouldn't. it wasn't the driver's or anything and it was the actual keyboard that had come off. Presumably when I dropped my laptop a while ago.

Thanks, and I hope this helped you.