It will not let me on, and this issue only occurs when CS:S is fully updated. I can play all other source engine games I have, but I can not play CS:S. I have reformatted my computer just so I could make sure BIOS and everything has been loaded correctly, but still I get the exact same error.
So problem solved, what I had to do to fix it………I dont feel like taking that much time to post all of it….