Make sure your audio and video card drivers are as up to date as possible. Run Windows Update to ensure you have the latest sound card drivers, and check your video card and be sure those drivers are updated as much as possible as well.
First thing to do is to stay calm.
Now to solve the issue: You are missing the DirectX End-User Runtimes (2010)
And lastly, please use the Search function as this has been discoussed multiple times. You can also check out this Thread right HERE as it has most of the Launcher issues solved.