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: Is it possible to downgrade editions without clean install?

11 Dec 2011   #1
pipet

Win 7 Ult & Win 7 Pro
 
 
Is it possible to downgrade editions without clean install?

I am currently running Win 7 Ult 64 on my desktop.

I am building a new system & want to use my Win 7 Ult key on it. From what I've read, there is no reason I can't move it to another machine (it's not an OEM copy). I want SUA on my main PC.

The reason I'd like to downgrade is to use my old box for HTPC tinkering and whatnot, and I already bought a new edition of Win 7 to use for that purpose (still will use 64 bit). I *could* do a clean install, but it would be nice to have my settings saved, etc (nothing getting recycled from old box except one data HDD). I don't *need* Ultimate to tinker with a HTPC, and not being made of $$, I don't want to buy another Ultimate copy again.


My System SpecsSystem Spec
.

11 Dec 2011   #2
Sub Styler

Windows 7 Ultimate x64
 
 

Use windows Easy Transfer to move your stuff out, then re-install with required version and transfer back.

Tutorial here:
Windows Easy Transfer - Transfer To & From Computers
My System SpecsSystem Spec
11 Dec 2011   #3
gregrocker
Microsoft MVP

 
 

There is a workaround to change between versions which was used by many to change from beta to their paid lesser versions, however I don't know how SUA would fit in. What is the version you wish to end up with exactly?

The workaround requires changing 2 Registry listings to trick the installer into thinking it's doing a same-version Repair Install which in Win7 is an in-place Upgrade.

You change the following keys to exactly the lesser version name, e.g. HOMEPREMIUM for the EditionID, and Windows 7 HOMEPREMIUM for the ProductName. Then run the installer from desktop, activate with new key:

-regkeys.pngclick to enlarge


My System SpecsSystem Spec
.


11 Dec 2011   #4
pipet

Win 7 Ult & Win 7 Pro
 
 

Thanks, I'll try the registry trick first. The SUA part required additional downloads from on top of Ultimate; I don't really remember all that I did to set it up! If it causes problems, I'll just migrate or clean install, depending on how ambitious I feel.
My System SpecsSystem Spec
Reply

 Is it possible to downgrade editions without clean install?




Thread Tools





Similar help and support threads
Thread Forum
Downgrade from Ultimate to Professional without a clean install
Is this possible? I have Ultimate with SP1 right now and want to use Professional SP1
Installation & Setup
W8 downgrade -> Windows 7 doesn't detect HDD during install [FIX!]
Maybe this will help some people. It's a little easier alternative if you're in the same situation I am. ->Purchased new laptop with Windows 8.1 factory installed ->Purchased on April 14, 2014 ->Laptop has UEFI motherboard ->HDD is setup w/ GPT ->Inserted Windows 7 Professional DVD...
Installation & Setup
Cannot downgrade to install Windows 7 onto Sony VAIO SVE151J11M
Hi there all, My friend brought over his Sony Vaio SVE151J11M today as it would not load boot up (Windows 8), I have here a genuine copy of Windows 7 which I purchased a couple of years ago and the disc has been kept in immaculate condition but it will not install onto this laptop. ...
Installation & Setup
Clean Install of Win7 - Wipe Hard Drive Clean
Hi Folks, I just did a clean install of Win7 and must have done something wrong. I found a file called Windows.old.:confused: I would like to wipe my hard drive completely clean and then install a fresh copy of Windows 7 Home Premium. How do I accomplish this task? It's a good time to...
Installation & Setup
Upgrade install to downgrade
I want to deactivate my copy of windows 7 ultimate, and give it to my family. Can I do an upgrade install but install Home Premium?
Installation & Setup
Clean Install For Windows 7 E Editions and From XP
If in Europe you will be getting a 'E' Version of Windows 7 and having to perform a 'clean install'. this also applies to those in areas receiving an 'upgrade disk' but going from XP there are a few simple solutions to do this without having to backup all your data to removable media 1. if...
General Discussion

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 20:14.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App