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Windows 7: Installed wrong version of W7


10 Jul 2011   #1

Windows 7 Premium x64
 
 
Installed wrong version of W7

I've had a week of the perfect storm of problems with my multi PC setup! But without boring everyone with the details, I reinstalled Windows 7 home premium, recovered my setup key from a backup after recovering part of the backup from WHS, only to realize the key is for professional, not home premium!

So basically I installed the wrong version of Windows 7 and it wont allow me to enter the key saying rightly that I'm entering a key to the wrong product.
I also attempted to do an anytime upgrade but that fails without message. I think it is failing because the installed product is not registered yet.

At this point the last thing I want to do is a reinstall because I just finished a weeks worth of work to get the fresh install back to the state I need it in.

What is my best choice here? Can I do a repair install with Professional without losing anything?


My System SpecsSystem Spec
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10 Jul 2011   #2

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

If you have sp1 installed, make sure Windows updates are up date.

No install files needed.
Only the Upgrade key is need.
Anytime upgrade only adds-on the Programs & Features from version to version.
Windows Anytime Upgrade - How to
My System SpecsSystem Spec
10 Jul 2011   #3
Microsoft MVP

W 7 64-bit Ultimate
 
 

Hello fstr, welcome to Seven Forums!


Have a look at this tutorial at the link below, it says Vista but the principal is the same and be sure to post back with any further questions you may have and to keep us informed.
Upgrade Install with Windows 7
My System SpecsSystem Spec
.


10 Jul 2011   #4

Windows 7 Premium x64
 
 

Quote   Quote: Originally Posted by theog View Post
If you have sp1 installed, make sure Windows updates are up date.

No install files needed.
Only the Upgrade key is need.
Anytime upgrade only adds-on the Programs & Features from version to version.
Windows Anytime Upgrade - How to
Updates are up to date but SP1 is NOT installed. Further I followed the guides on the anytime upgrade without luck
My System SpecsSystem Spec
10 Jul 2011   #5
Microsoft MVP

 

First set a System Restore Point - Create

Type regedit in Start Search box, rightclick result to Run as Admin, change the two Registry Keys exactly as shown below to trick the installer into running a same-version Repair Install which is always allowed.

click to enlarge
Installed wrong version of W7-win7_alter_registry.png


My System SpecsSystem Spec
11 Jul 2011   #6

Windows 7 Premium x64
 
 

SOLVED;
In a last attempt to avoid a repair or upgrade install, I installed sp1 and all the subsequent updates. At that point I did a selective (msconfig) restart and the anytime upgrade worked
Thanks for all the help!

My System SpecsSystem Spec
11 Jul 2011   #7
Microsoft MVP

W 7 64-bit Ultimate
 
 

Good to see you found a solution and thanks for the update.
My System SpecsSystem Spec
12 Jul 2011   #8

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Well done.
My System SpecsSystem Spec
Reply

 Installed wrong version of W7




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