Tecra A9 - Toshiba Assist buttons doen't response

My buttons the "Toshiba Assist:" and the button below that is also not responding when i use them.
Can someone assist me in how i could go about making them work ?
* I already tried using/ installing Toshiba Assist application. It tells me to restart the system but it still doesn't work after it had been restarted.
Thanks in advance for whatever help i can get


You dont write anything about your installed OS.
What OS are you using???
If you have installed Win XP then a Common Module and Toshiba Controls must be installed to ensure that all Toshiba button would functions.
If you are using the Vista OS you should reinstall the Toshiba Value Added Package.