Good luck!
I wish I could get my Dell keyboard to stay lit longer than 10 seconds when not depressing any keys.
There is of course:
* are all-your--drivers---up----to-----date?
* When did this first occur?
* Have you looked at the Administrative Events?
* Do all your keys function properly?
* Have you checked your owners manual/PDF
* Have you tried reverting back to an earlier driver through the Device Manager?
* Blah blah blah...?