IVE REINSTALLED WINDOWS AND FORGOTTEN MY ACCOUNT WITH STEAM ..AFTER USING ANOTHER ACOUNT I MADE I CANNOT ACTIVATE MY GAMES ITS SAYS THER INVALID WITH MY GAME C D KEY I SEND ANY ANSWER TO THIS PLEASE TO PLAY MY GAMES AGAIN
Unless you can remember your username, and password for your old steam account.
You have no chance at all Steve.
All the games with cd keys are paired with that account, username, and its steam ID player number for online games.
The cd keys can only be used by that account and have already been used by it.