I've wasted Today 5 hours of precious life and wanted GTA IV on my Windows 7 - Install PC. What Rockstar Games has come up with here is a bottomless impudence on users! You fight with the installation, with SECUROM and Windows Live as well as social club and loses. You lose time, patience and faith in a software company which used to be somewhat user-friendly software has offered. The game I could even start shortly - A Windows Live Sign-in I did not get. He said we always the product key is invalid. Although I do indeed have the original. So I could only briefly allude (did not save yes) and was once again negatively surprised. GTA IV has crashed with 2 different error messages and no longer been bootable after a patch. Madness! Stay away from this game. Who buys already lost!