11-14-2012 04:46 AM
Welcome to BlackBerry Support Community Forums
I Assume you already tried a Battery Pull if not you can try it or else go through this Knowledge Base Article :
KB29640 : Trackpad ,trackball, or keyboard not working on a BlackBerry Smartphone.
If that fails then you might have to visit a repair shop and see if replacing your device keyboard help to resolve the problem.
Click " Like " if you want to Thank someone.
If Problem Resolves mark the post(s) as " Solution ", so that other can make use of it.