My Acer 3680 laptop wont play sound out of its speakers it did work the first few weeks I had it then I did some windows updates and restart and bang it didn't work anymore

,
Sometimes it still works, like this little program that comes installed with the computer that likes to call itself the "Sound Manager"

has a little demo sounds .. they play fine real cool

... and the pc beep that plays fine as well but when I plug a set of headphones in to jack the pcbeep gladly stops, especially since the pcbeep was playing at fullblast

.
So anyways I also try to open volume control and receive the
"no active mixer device error message"
I have tried uninstalling and reinstalling my sound card driver. I have installing over top of. But the error remains and I still do not have any sound.
I would really like some help getting my sound back if anyone can get me some help on this it would be most appreciatted.