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Windows 7: deactivate windows 7 in order to reinstall on another PC

13 Jun 2011   #1
whyld4900

Windows 7 Professional 64-bit
 
 
deactivate windows 7 in order to reinstall on another PC

Hello,
I have a Toshiba laptop that came with Win 7 Home premium 64-bit. I installed Win 7 Pro 64-bit on top of Home Premium. Now I want to but a new laptop and move Win 7 Pro to the new laptop. Do I have to deactivate the Win 7 Pro? If so how do I do that?


My System SpecsSystem Spec
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13 Jun 2011   #2
richc46

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, clean install, upgrade disc
 
 

Welcome
You must uninstall Pro by installing another OS over it or format it
Then just install in the new computer.
You can install as many times as you like but one computer at a time.
My System SpecsSystem Spec
13 Jun 2011   #3
bobkn

Windows 7 Pro X64 SP1
 
 

There is no explicit deactivation.

You are supposed to uninstall it from the first machine before installing it on the second. You may have to activate the new installation by telephone, as the key is already in use.

I have read claims that if you activate a second machine with the key and connect the old machine to the net, the installation on the old machine will be marked as not genuine. I'm fairly sure that was false in the XP days, but I don't know about with Win7.
My System SpecsSystem Spec
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14 Jun 2011   #4
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

How to use Toshiba Recovery.
How to use the Toshiba HDD Recovery Utility

You can order Toshiba Recovery disks from here:
https://www.csd.toshiba.com/cgi-bin/...rification.jsp
My System SpecsSystem Spec
14 Jun 2011   #5
alphanumeric
Microsoft MVP

Windows 8.1 Pro with Media Center 64 bit
 
 

You can deactivate windows 7 > Product Key Number - Uninstall and Deactivate in Windows
I'm not sure there is any real advantage to doing it in this case though. You can have a look and make up your own mind though. Maybe do the above and then try this. > UNAWAVE - Downgrade Ultimate to Home Premium or Professional
My System SpecsSystem Spec
14 Jun 2011   #6
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Hello whyld4900, welcome to Seven Forums!



The way to deactivate an activation key is to type slmgr -upk into an elevated command window, have a look at the snip below, be sure that you don't do it until you are ready as it will make Windows non-genuine at the next reboot.

click to enlarge
-uninstallkey.jpg
Edit: Now I see the tutorial was posted above.


My System SpecsSystem Spec
14 Jun 2011   #7
gregrocker
Microsoft MVP

 
 

I would try alpha's downgrade workaround to change from Ultimate to Home Premium, then at Computer>Properties change the Product Key back to the Home Premium key on the COA sticker which came with the computer.

If you plan to sell the laptop, I'd also consider running the Recovery Disks to set it back to factory conditions with all the utilties (and bloatware) that came with it.
My System SpecsSystem Spec
14 Jun 2011   #8
bobkn

Windows 7 Pro X64 SP1
 
 

Quote   Quote: Originally Posted by alphanumeric View Post
Correct me if I'm wrong, but this deactivates Win7 on the local machine. It does not reset the Microsoft activation server and free up the license key. There's not much point in doing this.
My System SpecsSystem Spec
15 Jun 2011   #9
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Quote   Quote: Originally Posted by bobkn View Post
Quote   Quote: Originally Posted by alphanumeric View Post
Correct me if I'm wrong, but this deactivates Win7 on the local machine. It does not reset the Microsoft activation server and free up the license key. There's not much point in doing this.
Quote   Quote: Originally Posted by Bare Foot Kid View Post
Hello whyld4900, welcome to Seven Forums!

The way to deactivate an activation key is to type slmgr -upk into an elevated command window, have a look at the snip below, be sure that you don't do it until you are ready as it will make Windows non-genuine at the next reboot.
click to enlarge
Attachment 159663
Edit: Now I see the tutorial was posted above.
It must free up the key at the servers if it does this.
My System SpecsSystem Spec
15 Jun 2011   #10
Barman58

Windows 8.1 Pro x64 x3 + Windows 10 Preview, Ubuntu
 
 

I can confirm that the licence server must be updated, as the copy of win7 will fail the next licence check and present the black screen and not genuine message
My System SpecsSystem Spec
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 deactivate windows 7 in order to reinstall on another PC




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