hl2.exe errors every time I launch

Sorry if this has been covered, but I cannot find another thread that deals with the problem I am having. Every time I try to run Black Mesa it goes to a black screen with a loading icon before windows informs me that hl2.exe has stopped working. I have vista, I have the SDK, and I have tried downloading DX 9.0c to only get a message that I have a newer version so no install is necessary. The Black Mesa game does appear on steam, which is how I am trying to launch it. Thanks for any help, I really want to play this game.

Bump.

What are your specs and in event logs, what error does it say?

Thanks for the reply. I got it to work by reinstalling DX. I am playing it now, and enjoying it immensely.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.