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: How to uninstall Win 7 32bit from old PC and install 64bit in a new PC

29 Mar 2016   #1

Windows 7 Ultimate x32
How to uninstall Win 7 32bit from old PC and install 64bit in a new PC

I have Window 7 Ultimate official box set and installed the 32bit in my old PC few years ago, it was fine till recently the hardware failure from time to time, so I bought yesterday a new set PC (DIY) without OS.
Now I want to transfer the Window 7 license to the new one but use 64bit version. I fully understand the license key only work for 1 PC, therefore I intend to deactivate/ uninstall 32bit in old PC, and use the same key (I read your forums and it should work) for 64bit in the new PC.
Could anybody help to let me know the procedures for deactivate/ uninstall the 32bit from the old PC? prefer step by step, as I am not good at such modification work.
I wonder this procedure should not just been done in the old PC only, I expect it should use LAN connect to Microsoft Web somewhere, to let their product key register servers know that I did uninstall 32bit, so that the product key will be valid again. Please let me know the procedure of that and is this connection/ register servers are regional related (i.e. globally all in US MS HQ or in local MS office Asia)?
Moreover, I believe the installation of 64bit in new PC just like the fresh new installation. Load the software and key in the product key to complete. If any problem or points need to be noted, please kindly advise me as well.
Thanks for your help.

My System SpecsSystem Spec
29 Mar 2016   #2

W7 home premium 32bit/W7HP 64bit/w10 tp insider ring

Hi Dcksony,
first of depends on your licence, is it
OEM -- (including system builder) then its not possible to transfer it to an other comp.
Retail -- no problem at all, just download the OS from MS (to a disc/USB)

if you only have 2GB ram then only the 32 bit version will work properly
your original box set SHOULD have had both versions included
MS does NOT care if its 32 or 64 bit the licence is valid for both installs.
if you do not know what type of licence you have read this tutorial and post the output
Windows Genuine and Activation Issue Posting Instructions

Answer the above then i can give you more information.

My System SpecsSystem Spec
30 Mar 2016   #3

Windows 7 Ultimate x32

Hi Roy,
My Window 7 sure is Retail license, the box set has 2 CDs, 1 for 32bit, 1 for 64bit and with a yellow color product key. Old PC has 4x1GB RAM and the new PC has 2x8GB RAM.
My System SpecsSystem Spec

30 Mar 2016   #4

W7 home premium 32bit/W7HP 64bit/w10 tp insider ring

Well thats really good news,
The only thing you >>might<< have to do is a telephone activation. But if you tell them what you told us you wont have a prob.

note you cant have two running at the same time, just wipe the 32 bit with a linux os

My System SpecsSystem Spec
05 Apr 2016   #5

Windows 7 Ultimate x32

Dear Roy,

Idid try the last weekend. I pull out the LAN from old PC and connected to thenew PC, then I put in the window 7 x64bit CD and start the installation.After completion, the window detect the LAN setting and it automaticallyactivated.

Noneed to contact the phone activation and I re-format the old PC to ensure1 key 1 PC.

Thanksfor your help and now my problem gone.

Thanksso much.

My System SpecsSystem Spec
05 Apr 2016   #6

Windows 7 Pro x64 Windows 10 Pro x64

What do you mean it won`t work properly Torch ?

It will work fine with 64 bit, and then he has the opportunity to add more memory.

If he has a newer PC, I would hope it has at least a dual core cpu and the ability to add more memory then only 4 GB.

My 9 year old Gateway GT5404 runs 7 HP 64 bit and 10 Pro 64 bit, with an E6700 and a max of 4 GB DDR2 just fine.

I just wish it supported a faster CPU

Gateway GT5404
Intel Core 2 Duo E6700 @ 2.66 MHz
Intel 530 Series 180 GB SSD
4 GB PC-2 6400
Windows 7 Home Premium SP1 64 Bit
Windows 10 Pro 64 Bit
My System SpecsSystem Spec

 How to uninstall Win 7 32bit from old PC and install 64bit in a new PC

Thread Tools

Similar help and support threads
Thread Forum
Win 32bitpro as well as Win7 64bit pro How to uninstall win 32bit ver
I have 1520 laptop(Dell) and with Microsoft support, we set up new hard drive with Win 7 64 bit pro. First we installed 32 bit pro version, afterwards we installed 64 bit ver. I did this all over phone with Microsoft Support. I need to uninstall the older 32bit version? I couldn't find files to...
Installation & Setup
Able to install 32bit but not 64bit
So I messed up my laptop, it was Win 7 home 64bit. I formatted it and do a clean install, but I can only install 32bit. When I try to install 64bit, I get "hardware problem and installation could not be complete" what's that?
Installation & Setup
Anyway to have 32bit and 64bit on the same usb for install?
I know how to install windows from usb, and know how to tweak it so I can install home/prof/ultimate from the same iso, but is there a way I can have both 32 and 64 bit copies on the same disk, without having to move files around before I boot from the usb? Thanks
Installation & Setup
W7 64bit:Ok to install 32bit programs outside the 32bit programfolder?
OS: Win 7 64bit. Is it generally not a problem to choose to install a piece of 32bit software outside the win 7 default program folder for 32bit software? Or is 32bit software only supposed to be running flawlessly, if installed in that default 32bit folder? Thanks.
32bit vs 64bit install.
So i just found out that my processor supports 64bit. Would it be better to install 64 bit?
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 21:00.
Twitter Facebook Google+