The launcher seems to be a problem for lots of people. If you just want to play the game and aren't worried about custom content then go to C:\Program Files\Electronic Arts\The Sims 3\Game\Bin (default install path) and run TS3.exe. This runs the game without the launcher and should get you in without the need of the launcher. If this fails try right clicking your shortcut and click run as admin. If the problem still occurs and you can't play the game then try a re-install. If that also fails then it would appear to be a hardware problem I'm afraid.