Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: New CPU and MB, how to reinstall using my retail upgrade disc.

13 Jan 2014   #1

W7 Home Prem 64
New CPU and MB, how to reinstall using my retail upgrade disc.

Hello, I will be replacing motherboard and CPU with vastly different models. I am currently running W7 installed from a retail upgrade disc from XP.
I plan on using same hard drives and don't mind reformatting system disk. What is my best bet for a successful reactivation. Thanks in advance for any replies.

My System SpecsSystem Spec
13 Jan 2014   #2

Windows 7 Pro x64 Windows 10 Pro x64

You can reuse your Upgrade key, but you might need to reactivate by telephone.

It might boot up ok, but it`s best to do a fresh install on new hardware.
My System SpecsSystem Spec
13 Jan 2014   #3

W7 Home Prem 64

OK, Like I mentioned I can live with reformat and fresh install. I just did not know if it was legal with the retail upgrade disc as far as Microsoft is concerned. Thanx.
My System SpecsSystem Spec

13 Jan 2014   #4

Windows 10 Pro X64

My System SpecsSystem Spec
15 Jan 2014   #5
Microsoft MVP


You can try starting Win7 on the HD first.

If it won't start then you can boot freeware Paragon Adaptive Restore CD
to P2P Adjust the OS to the new hardware so it will start. Then reactivate with the Upgrade Product Key to change the hardware signature in MS Activation servers.

This should work without having to do the workaround to install Upgrade version on cleaned HD, but if not simply do the quick registry workaround in Option 2 of the tutorial Ken linked just above.

If you decide you'd prefer to reinstall, when you boot the installer it should detect an OS on the HD and pass a flag allowing use of Upgrade version key during install, even if you go on to delete all partitions to get the cleanest install. If it rejects the key leave it blank and do Option 2 in tutorial in post above.
My System SpecsSystem Spec
21 Jan 2014   #6

W7 Home Prem 64

Thanks all. Everything went fine using windows7 retail upgrade to format and install using the clean install tutorial provided.
My System SpecsSystem Spec

 New CPU and MB, how to reinstall using my retail upgrade disc.

Thread Tools

Similar help and support threads
Thread Forum
Is A Retail Upgrade Disc Tied to One Computer?
Years ago, I purchased a Windows 7 upgrade DVD at Walmart, to be used on my Gateway computer, which came with Vista. I paid 120.00 for it. My understanding is that I can only use this disc/license on the Vista computer. When I reinstall W7 on this computer, I first have to install Vista, then W7...
Windows Updates & Activation
Installing win 7 home premium again using retail upgrade disc?
Can this still be installed and activated? I have an older build of mine I've been using mostly for burning movies and music on. I upgraded my main systems cpu and motherboard and I would like to put those components in my burning tower as they would be an upgrade to it. The drive will no longer...
Installation & Setup
Can I REinstall Windows 7 using an upgrade disc?
I bought a laptop several years ago with Windows Vista installed on it, and opted to buy the upgrade disc to Windows 7 from Dell when it was released. The laptop is still functioning - just - and I would like to clean reinstall Windows 7 on it, restoring it to how it was when it was first...
Installation & Setup
Can I clean reinstall after activating, with upgrade disc?
I have just bought a used Vista laptop (Sony Vaio) and have a Retail copy of a Windows 7 upgrade disc. I have made recovery discs of the Visa. Have followed option 2 of the tutorial on how to install using an upgrade disc. So I haven't reformatted or cleared the partitions. I did this because I...
Installation & Setup
Verification: Windows 7 Upgrade Retail Disc on new HDD
I have found several posts from 2009 that have mentioned the possibility of installing Windows 7 on a new/empty/formatted HDD with an Upgrade edition. I have not, however, found anything recent on this. I have an unused, full retail version of Windows 7 Ultimate 64 bit Upgrade handy and am going to...
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 00:00.
Twitter Facebook Google+