Steam gave, gives, and will always give me a headache. Well, I solved a lot of problems I had on its startup, I played with it for 1 year. Then, when I tried to open CS:S yesterday, the only thing I got is a message saying: "Scanning for Steam game updates". Well I left it doing that for one hour. Nothing happened. I restarted steam, Nothing happened. I restarted windows, Nothing happened. I searched the answer on Steam Support. Found nothing relevant. Searched on Google. Found nothing relevant.
So, any help would be appreciated.