Help with counter strike source

HI, my counter strike source will not open on my desktop and i dont know what could be causing this and i really dont feel like uninstalling it again.. If anybody could help me thanks :)

We need more detail is needed to determine the problem you are having. System specs,what the error is, etc.

Google is your friend when it comes to these kinds of errors.

Also try steam support at www.steampowered.com