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Windows 7: Installing W 7 onto a new build.

06 Jul 2015   #1

Windows 7 Home Premium x64
Installing W 7 onto a new build.

My moms computer has died and I am building a new one for her.

What I need to know is if I can install her existing Windows 7 on the new system or do we have to get a new copy ?

I'm not exactly up to speed on how all this works but I gather that the OS kind of attaches it to the hardware and this info is used with activation/registration and that the new install might fail because of the new hardware. So far as I know, this is a retail version of Windows 7.

Any help would be appreciated.

My System SpecsSystem Spec
06 Jul 2015   #2

Windows 7 Pro x64 Windows 10 Pro x64

A retail disc and license can be moved to another pc, it can only be used on 1 PC at a time, so if the other pc died you are fine to use it on the new build.
My System SpecsSystem Spec
07 Jul 2015   #3

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit

Quote   Quote: Originally Posted by noelw1969 View Post
My moms computer has died and I am building a new one for her.
Where did you get the dead computer?



You built it for her?

Where did the Windows on that dead machine come from?
My System SpecsSystem Spec

07 Jul 2015   #4


If the old PC comes with a COA sticker with Product Key used for reinstall, then it is a Factory OEM copy which cannot be moved to another PC.

If it was instead upgraded from another OS that came on the PC, or was installed with a full retail copy of Win7, then you'll need the Product Key off the packaging to move it to the new PC.

Let us know which this is and we'll tell you how to proceed.

When you say the PC "died" what does this mean exactly? If only a part like the hard drive or RAM died then these can be replaced preserving the license for reinstall. Only if the mobo died is a license which came with the PC truly invalid and cannot be reinstalled.
My System SpecsSystem Spec

 Installing W 7 onto a new build.

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