My Surface Pro is not producing and sounds. I plugged in some speakers to the aux port. I opened up a video on youtube, audio was fine during the ad but when it switched to the actual video the audio completely went out. I tried other videos on youtube, other website, and local audio files. I've tried using the Surface without anything plugged in and with other headphones plugged in. I've even tried a bluetooth connection. I've restarted it. Nothing is producing any sound, not even the little clicks you get when you type on the on-screen keyboard. I've gone through the Windows 8.1 settings and the desktop control panel and it seems like I should be getting some sound. What do you think? Any help or suggestions? Thanks guys.