I recently upgraded my Surface Pro 3 to Windows 10, and now I can't seem to open any of the apps that I have gotten through the Windows Store on 8, or Settings, or Internet Explorer Edge, or even their Customer Support app. It seems like the majority of my applications are just non-functioning, and I'm not sure why. Things like Chrome, Audacity, and Microsoft Word open just fine, though. However the pre-installed Microsoft Office app will not open. It seems like all of this happened after I decided to opt out of turning on tablet mode. Now, I can't even access settings to turn tablet mode back on.