System Lockout

I have recently install Bitdefender Internet Security 2012. I have used another vender in the past and was frustrated with them. I am new to Bitdefender. One major thing that the new software is doing is not allowing me to control functions of my Toshiba laptop, such as adjusting brightness, adjusting volume control and other functions like that. How can I get the firewall/ virus control to allow me to use these? Thank you, teachandlearn

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