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When reinstalling Windows 7 or Vista, does the language, version, architecture (64-bit or 32-bit) or source (OEM, retail, or MSDN) matter?

I installed the RTM version of Windows 7 Professional and today I received the upgrade media for Windows 7 Professional. It won't take the serial number because the RTM is the full version, duh. Can I "upgrade" my RTM version and still keep all my settings and programs?

To clarify, the RTM is a full install version and I have the upgrade media. So, no changing the key won't work.

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migrated from Oct 29 '09 at 21:36

This question came from our site for system and network administrators.

marked as duplicate by nhinkle Jun 28 '11 at 1:39

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

I'm a little confused why you want to upgeade from windwos 7 pro to windows 7 pro? The RTM version is the same version as you have on your upgrade media. – Sam Oct 29 '09 at 15:32
Do you just want to change the key? – dlux Oct 29 '09 at 15:35
You might be able to do something using slmgr but I've not seen any documentation on it, sorry – Ewan Oct 29 '09 at 16:11

I am under the impression you can just go into System properties (Right click my computer | properties or winkey + Pause/break) and enter a new key under the Windows activation section. There is an option to "Change Product Key"

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