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: Upgrading from win 7 32bit to 64bit

09 Jun 2010   #1

Windows 7 Ultimate 32 bit
Upgrading from win 7 32bit to 64bit

I want to upgrade my windows 7 32 bit installation to 64bit so I can add some extra ram to my system, but I was wondering if I do a backup on my 32bit install, format the drive, and then install 64 bit windows 7 and recover from the backup will it work? Can you use a 32 bit backup on a 64 bit machine?

And also if anyone knows of an alternative it would be appreciated.

My System SpecsSystem Spec
09 Jun 2010   #2

Vista 64 Ultimate, Windows 7 64 Ultimate, Ubuntu 9.10

You will have to do a clean installation of Windows 7 and your backup from the 32 bit version will not work, sorry.
My System SpecsSystem Spec
09 Jun 2010   #3

Windows 7 Ultimate x64/x86 Windows 7 Pro x64/x86 Windows 7 Home Premium x64/x86

Lanthus20 yes your backup will work. But fishnbanjo was right about one thing. You will have to do a fresh install.

There is no upgrade path from x86 to x64.

Flush and format.
My System SpecsSystem Spec

13 Jun 2010   #4

Windows 7 Ultimate 32 bit

ahhh which do I trust? Third opinion for tie breaker?
My System SpecsSystem Spec
13 Jun 2010   #5

Windows 7 Pro X64 SP1

I'm not sure what you're asking.

To switch from a 32 bit version of Windows to a 64 bit one, a clean install is required. (Same to go from 64 to 32 bit.) No installed applications will be preserved.

If you image (backup) the 32 bit installation and restore it, it will overwrite whatever is on the machine. The 64 bit installation will be blown away.

I know of no way to preserve installed applications. Easy Transfer may be able to handle settings, but I've not tried it. (I generally have not had that many settings to preserve.)
My System SpecsSystem Spec

 Upgrading from win 7 32bit to 64bit

Thread Tools

Similar help and support threads
Thread Forum
upgrading from 32bit to 64bit (OEM to Retail)
If I have a Windows 7 Home Basic 32bit OEM installed and I and to upgrade to Windows 7 Home Basic "64bit" (Retail version Downloaded from internet) can I use my OEM product key to activate the retail one on the same computer with no hardware modifications?
Windows Updates & Activation
Upgrading to Windows 7 64bit from Vista 32bit
Hello everyone! I am new to this so please bear with me. I bought windows 7 from newegg, however, I did not know it was Windows 7 OEM System Builders Pack. I am upgrading my motherboard from ASUS M3A78-CM to ASUS M5A78L-MLX Plus before I install windows. I can't replace my hard drive because one of...
Installation & Setup
Upgrading of Windows 7 32bit to 64bit
I know that one copy of windows 7 can only activate one computer. I have two, one already with windows 7 32bit installed and one without windows 7. I plan on buying a new one, installing windows 7 on my second computer and upgrading windows 7 to 64bit on the other. If I upgrade, will windows use...
Installation & Setup
Upgrading windows 7 32bit to 64bit
Hi -ive exhausted all options and would really appreciate some help... I have an operating system which can handle 64bit no problem. I recently bought the windows 7 home premium and by mistake installed the 32bit version (doh!). I then inserted the 64bit disk but keep getting the following...
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 11:22.
Twitter Facebook Google+