Quick touch keys on my HP compaq notebook

[mandar]

Hello all,
I have Compaq Presario CQ45 206au notebook which carries AMD Turion 64 X2 Processor, and ATI chipset.
It has some capacitive quick touch keys for muting and volume changing,
When I touch the keys, I get the visual notification of the action such as volume changing with graphical slide bar, but there are no variations in the sound levels at all.
Any help on this issue appreciated.
Thanks and regards.

[g4gupta]

Try changing the master channel in Kmix (the defalult sound icon u see in the pannel) to internal analog .. it must be HDMi currently .. It worked for me ....am using cq45 106 au pc