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Windows 7: can i install windows 7 again after upgrade Clean Installation

03 Jul 2010   #21

Windows 7 Ultimate 64bit

Hello, Im new to this, and my question is sort of the same, i have a family pack of Home Premium and i need to do a clean install of windows 7 because of problems but i do not want to use another product key of the three, i have already used two and one of them is the computer i want to do a clean install on, will it use another product chance?


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03 Jul 2010   #22
Microsoft MVP


You can reinstall retail Win7 with the same valid key as many times as you want. If your hardware changes, you might need to make a robocall during activation to update it.

When you boot the DVD it will scan the HD to see any OS, which is enough to pass a flag allowing use of Upgrade version key.

If you need to wipe the HD first to clean possible infection, then you will need to run an Upgrade install from the newly installed Win7 desktop to get it to accept Upgrade version Product Key.
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 can i install windows 7 again after upgrade Clean Installation

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