Windows – Downgrade Windows 7 Ultimate to Home Premium without a clean install

downgradewindows 7

Currently I've got an installation of Windows 7 Ultimate x64. I would like to downgrade to Windows 7 Home Premium x64 without a clean install. I've got a (legal) retail disc and tried the following tricks:

  1. Trick the Windows version using a registry hack with all possible combinations

  2. In combination with a trick to make an ISO with all editions

Still the Windows setup keeps telling me I can't upgrade because I've got a higher version installed (Ultimate). The trick seems dead. Does anyone know a way to change from Ultimate to Home Premium without the hassle of a clean install?

Best Answer

Windows 7 Ultimate is a superset of Home Premium, so no need exists to ever downgrade aside from licensing issues. You can change the Windows Components by going to "Start | Control Panel | Programs and Features | Turn Windows Features on or off" to remove those components included in Ultimate but not in Home Premium , effectively downgrading to the desirable version.

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