Hi all,

There is a headachy problem which is really annoying me. I have thought it over without any result. Recently, I installed Windows 8 operating system on my laptop, but it seems that there is some problem about the sound coming up. I right click the button on taskbar, there are some options for me, just as it usually is. Then I left click it, it gave me no response to adjust the sound volume.

Could you tell me why? Any suggestions?

Thanks a lot!