Originally posted by 420
I just upgraded my system from vista to 7 but in the process I had to wipe my memory. Now I went to go and reinstall L4D on my PC but steam keeps saying that its being used on a different PC. How do I either deactivate my old Code so I can reinstall it or how do I go about getting a new CD key? Can anybody help?
Sign into your account that had L4D2 on it and then re-download it from there.