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      10-12-2011, 01:04 PM   #1
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Win 7 registration problem

i did a clean install on my new build PC, and i tried to register it with a purchased key from microsoft......and it gave me this error.....is there a way around it or do i have to install and upgrade it again?
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      10-12-2011, 02:23 PM   #2
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That error shows that the product key is for a windows 7 upgrade, which is not a clean install like you did. For that product key to work you need to have an old version of windows installed, such as vista, then do the win7 upgrade and use that key. I think u purchased the wrong key/cd?
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      10-12-2011, 04:07 PM   #3
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You can get around it via MS's install live help. I've done it several times as I don't ever feel like installing something else just to install 7. Call em up and explain that you've upgraded some HW which necessitated the reinstallation but didn't do the install of some previous version. They've never asked for my previous key so you should be good if you don't have one.
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      10-13-2011, 12:10 PM   #4
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Like Railgun said, call microsoft activation service and you should be good.
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      10-26-2011, 06:10 PM   #5
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Or, you can:

1) Install W7 without putting in the CD key.
2) Upgrade from W7 to W7, this time putting in the CD key.
3) Activate W7 as normal.

This was the way to do it for Vista, and should work also for W7.

Got this from a tech website:

click Start, type: CMD
Right click CMD, click ‘Run as administrator’
At the command prompt, type, regedit
Go to HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersionsetup/OOBE/mediabootinstall
change its value to 0
Go back to the Command Prompt, type the following:
slmgr /rearm
Restart the pc and use the activate windows to re-enter your product key

Last edited by MadDog; 10-26-2011 at 06:19 PM.
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