11-01-2012 05:35 AM
welcome to BlackBerry Support Community Forums
First advice is a Battery pull Restart do it like this While Device is POWERED ON remove the Battery wait for a min. then re-insert it back wait till the device take a long Reboot.See if that resolves the problem.
If not then please follow this Knowledge Base Article regarding your problem :
KB29640 : Trackpad ,trackball, or keyboard not working on a BlackBerry Smartphone.
Try it and let us know.
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If Problem Resolves mark the post(s) as " Solution ", so that other can make use of it.