I have an Acer V5 551g notebook, and until now I have been absolutely satisfied. It came with Windows 8, and a couple of weeks ago I upgraded it to 8.1. Not sure if it has anything to do with my problem, though. Whenever I try to play a video that is on my computer, or play music, there is no sound. (For example, I use VLC, and the picture is fine but no matter how many times I check that nothing is on 'mute', no sound comes.) However, when I play anything on the internet, the sound is just fine. Youtube is working, etc.
I checked the devices, and there appear to be 2: the speakers and the amd high def sound card. The latter appears to be disconnected. I have tried to check its 'properties' and there I was supposed to be able to check whether it was disconnected - and it said no. When I quit 'properties', it's still telling me otherwise. So my question is this: Is there any way I can 'reconnect' the AMD Radeon HD 7600G soundcard (or at least, I think that's what's in there)?