I have a 64bit Windows 7 Enterprise computer and some guy did the activation. I'm sure that this is not a legit copy. He probably used a cracked version or some activation tool. I tried running MS Toolkit and pressed the "Check" button, but it detects a Windows 7 Ultimate installed in the system. The system properties tells me it's Windows 7 Enterprise. I also have Bitlocker, etc installed in the system which is why I think this is Enterprise edition. I tried running Daz Loader but it says unsupported OS because it detects Windows 7 Enterprise. The computer worked fine for years but all of a sudden, it says the Windows is not Genuine. Is there a way to tell how it was previously activated (what kind of tool?). I don't see AutoKMS installed in C:\Windows drive which is why I think it's the not previous tool that was used. And what is the best way to activate it now? I'm thinking of using MS Toolkit.