I recently bought a G750JW, have absolutely loved it so far but have just found a few irritating issues.

I bought the laptop (perhaps inadvisably) with Windows 7 installed.
In the last couple of days I have found that multiple function keys (audio, trackpad cancellation etc) malfuction (or do not work at all), the trackpad does not have any added function past simple tracking (should it?) and audio output is intermittent and the volume control in the task bar is permanently visualised as being on mute, even if sound is playing.

I'm guessing at a driver issue, but I'm not incredibly technologically minded, and so would appreciate any and all help!!