bonjour, qui a déjà eu ce truc bizzard (You have to delete the registry files. At first close Steam. press windowsbutton R type in the field regedit then delete the valve folders. Hkey_Current_User/software/valve/ <--delete valve folder Hkey_Local_Machine/software/valve/ <--delete valve folder.
Arkshine I tried to send you a private message here, but it didn't work. I send you a private message on AlliedModders, it's about recovering an account. Please have a look over it when you have the time. Thank you!