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Windows 7: Installing Windows 10 on Multiple Devices?

04 Aug 2015   #21

Windows 7 Home Premium

Quote   Quote: Originally Posted by derekimo View Post
Quote   Quote: Originally Posted by DRProcek View Post
Quote   Quote: Originally Posted by SIW2 View Post
If your mum did an upgrade , you need the key from windows.old\windows\system32\config\Software hive
Okay, I followed that path, and I shouldn't have expected to just cleanly find the key lol.

In the software hive is just a document I opened with Notepad. Now I'm looking at the biggest wall of code I've ever seen, where most of the characters aren't even English. So lost.
Since you mention upgrade, I think this may work for you, worth a try anyway, it's had some success in the past,

Quote   Quote: Originally Posted by tom982 View Post
Hi thx1139,

I don't know how to do it in Jelly Bean, but I do with ProduKey:

Your Windows 7 product key is stored in the software registry hive, located here:


Please note, software is the file name, not a directory. It has no file extension. Your drive may have a different letter.

This is a little program that will tell you the product keys of the various software installed on your computer. What makes this different, is the ability to load keys from an external registry hive. Exactly what we want

So if you download and run ProduKey (by NirSoft):


Then press File > Select Source, you will be presented with a new menu. On this, select Load the product keys from an external Software Registry hive and you will be prompted to open a file. Navigate to the software hive on the external drive and open the hive. E.g. D:\Windows\system32\config\software. You should now have your product keys

Hope this helped.

Okay, my mom is here, so we were going to try the link you provided, but we don't know which one of these options we need to pick (in the attached image).

Attached Thumbnails
Installing Windows 10 on Multiple Devices?-produkey-screenshot.png  
My System SpecsSystem Spec
04 Aug 2015   #22

W10 Pro x64, W7 Pro x64 in VMware

Quote   Quote: Originally Posted by DRProcek View Post
Update: Windows 10 has been installed onto my mom's computer, but it isn't activated and her product key is read as invalid (I used some code in a notepad to get the key, and I can paste the code here if needed).
You can't use a Windows 7 serial to install Windows 10. The only way to get free W10 is to do an inplace upgrade (from within Windows 7) on a genuine and activated SP1 W7. If using a usb/dvd etc W10 must be same edition ie Home > Home, Pro > Pro and same 32 or 64 bit. The W7 serial does not enter into the process, so is not needed.

Re : keyfinders - if the OP's computers are oem-slp (ie preinstalled Windows, store bought pc), a keyfinder (or code) will just find the generic serial that is the same for all pc's of that type/make. This will be different to the COA serial. The COA serial can be used for reinstall, the 'found/audited' key cannot.

When a W10 upgrade is sucessful it also has a generic serial. Microsoft sends hardware data to their servers to identify the machine, so any future clean W10 reinstall will activate.

If the OP originally installed Windows using a store bought OEM or retail Windows 7 disk, then any keyfinder will give the correct (and unique) serial, and it may be possible to fix his activation probs using those keys. However, the jury's still out re : rolling back to W7 - some say it's possible, others find they are no longer activated.
My System SpecsSystem Spec
04 Aug 2015   #23

Win-7-Pro64bit 7-H-Prem-64bit

There's no way to know if you're running 32 or 64 bit
Click the start button and click on Computer
Click on C drive and see if you have both Programs and programs x86
If you only see 1 Programs folder your using 32 bit
If you see both you'd have x64 bit
That would determine which keyfinder you'd download
My System SpecsSystem Spec

04 Aug 2015   #24

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64

SOFTWARE is a hive .Needs to be loaded with registry program .

Produkey will let you browse to the windows.old\windows folder and load it for you.

Installing Windows 10 on Multiple Devices?-produkey1.jpg

Installing Windows 10 on Multiple Devices?-produkey2.jpg

ProduKey - Recover lost product key (CD-Key) of Windows/MS-Office/SQL Server

My System SpecsSystem Spec
04 Aug 2015   #25

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64

He is not reinstalling, he is rolling back as far as I can tell.If he can't get ot activate after all this, he can call MS on the toll free number, and they should activate for him.

64 bit

Download ProduKey for x64

32 bit

Download ProduKey (In Zip file)
My System SpecsSystem Spec
04 Aug 2015   #26
Layback Bear

Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64

Just hit the Windows Key and the Pause Key on the keyboard and you will see what is installed.
My System SpecsSystem Spec

 Installing Windows 10 on Multiple Devices?

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