srcds error

[pierce the veil]

hi, this is my first post and i hope someone can help. when ever i try
to run source multiplayer dedicated server it crashes with the error in the link

http://i.imgur.com/fmKng.jpg?1

Problem Event Name: BEX

from what i can tell BEX error means "Data Execution Prevention" or "Indicates a buffer overflow" the setting for this can be found in the control setting and i have all programs enabled to use this.
so why am i getting this error ?

http://technet.microsoft.com/en-us/library/cc738483%28WS.10%29.aspx


Also i have used the hldupdatetool which updated my files but i havent been able to resolve this problem.i would really like to run my own server, if anyone can help i would be grateful thanks

[legendddhgf]

I could try to help you find the problem through teamviewer. I think I need to see everything to really know what is going on.