Couterstrike Source not working.
So now whenever I try and play counterstrike source, I just get this little message that says "Validating Counterstrike: Source File (1 of 1) then the message goes away and the game does not play. Any thoughts??
XPEX Vortex 3620 Mid Tower, Rosewill 450 Watt PSU, MSI P6N SLI Platinum 650i, Intel Celeron D 356, 2GB G.SKILL DDR2 800, Western Digital 40GB, (2) EVGA 7950GT 256MB Video Cards in SLI, HP DVD Multi-Burner, Windows XP.