I have windows 10. The control panel doest help.
That's the problem...you have windows 10... :0|
(I'm such a hypocrite)
But you'll probably have to take it in for repair.
You can fix it yourself. All you'll need is some thermite and a magnesium flare. :-)
Seriously, lemme see if I can guess what happened: your Surface Pro was Win8 or thereabouts, and you let it 'update' to Win10. Is this correct? If so, you probably lost compatibility with your audio drivers. You can TRY to update your drivers, but your guess is as good as mine as to whether it'll work.