Any Skyrim players?

I have no issues at all with 8.1, but when everything fails usually compatibility mode will answer your problems.

Go to the following path:

C:\Program Files (x86)\Steam\SteamApps\common\Your Game Name here

Right click on the .exe file not the Launcher though, click compatibility tab and set the compatibility to run XP service Pack 3, click Apply.

You should be able to launch your game.