Have a problem at the moment launch MW2 select a game type doesn't matter and won't connect me to other players just keeps saying looking for more players.

I have used internal cheats before but never says cheat detected, the game type is retail.If i am banned how would i check it on my steam account.Also not sure if this matters but game version is still 1.1.195 and wont update to the newer version which we had it on before the computer under went a few fixes. Please Help