Counter Strike Source problum

[Chris19]

When ever i try to run CSS i get the word error randomly placed on maps then shortly after connecting to the server CSS closes its self. It worked fine before i installed my sound card. When i go to test speaker settings i also get the errors poping up.

I have installed the latest drivers for the sound card its an X-Fi Xtreme muisc.

Can anyone help?

 

[Chris19]

Yeah i have an unstable machine just now but i put it back to stock settings still the same i will redownload them i geuss