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Help with Windows 7 Home Premium 64-bit Key

Paladin3

Diamond Member
I was reinstalling Windows 7 Home Premium 64-bit for someone. It's a home built system they were given by a relative. The recovery partition was damaged and I had no installation disk, so I checked in properties and copied down the license key which is 20 digits long: xxxxx-oem-xxxxxxx-xxxxx. I triple check to make sure I had it correct before I went any further.

I downloaded a copy of Windows 7 Home Premium from Microsoft's Digital River website and installed it on the partition where the previous os was. During installation it asked for a 25 digit key and I can't activate it with the 20 digit key the previous copy of Windows was installed with.

What did I do wrong?
 
Sorry, a little bit more Google-fu and I answered my own question. I am confusing a 20 digit "product ID" with a 25 digit "license key". Doh!

Well, I guess it's a good thing I have an unused Windows 7 Home Premium key around here somewhere.
 
Last edited:
Correct, that is not the CD key. If you run into that again, you will want to use a program called magic jellybean which will get the proper key provided it wasn't a crack or factory install.
 
When you open regedit then save the key as a file *.reg

After you reinstall then you can apply that registry file. But yes magic jelly bean is best to use.
 
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