SRCDS.exe won't start

[snakesv]

Hi

Since one of the updates srcds.exe won't start anymore.
Not by directly clicking on it and also not by using a .bat command file.
By clicking it doesn't show anything. By .bat it shows the cmd window for a second and then closes again.

Anyone know what I can do to fix this?
It used to work.

Thanks in advance.

Edit: Problem solved.
A file named engine.dll was corrupted.

[USB]

use hlds to check if there was an update, verfiy the intergrity of your files by a command i belive -verifyall