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Windows 7: W7 32bit to 64bit

03 Mar 2011   #1

Windows 7 Professional 32bit
W7 32bit to 64bit

Hi guys I've did a bit of searching but cant find the info i'm looking for.

Basically I currently have the 32Bit of Windows 7 Professional on my PC (I was really sure I had 64!) so when I've come to install 4Gb of ram it only shows 3.2...
Can I just pop in a W7 Pro 64bit disc to upgrade with my current CD Key? Or do I have to buy it again?

Though I think I'd rather do a wipe and clean install, so would that be okay? I wont get bothered with any "this key has already been used" messages will I?

Thanks in advance :)

My System SpecsSystem Spec
03 Mar 2011   #2

Microsoft Community Contributor Award Recipient

Windows 10, Home Clean Install

You must do a clean install, but key is not a problem
Clean Install Windows 7
Clean Install with a Upgrade Windows 7 Version[2]=General Tips

As long its on one computer at at time, you can go 32 to 64 or 64 to 32 as many times as you like. You must do a CLEAN install, not an upgrade, even if you have and upgrade DVD.
My System SpecsSystem Spec
03 Mar 2011   #3

Windows 10 Pro x64, Arch Linux

You can't upgrade from x32 to x64, a clean install is required
Clean Install Windows 7
My System SpecsSystem Spec

03 Mar 2011   #4

Windows 7 Professional 32bit

Cheers for the 'super-special-awesome' fast reply

I'll do it straight away
My System SpecsSystem Spec
03 Mar 2011   #5

Windows 7 Pro X64 SP1

It's not clear from reading the thread what sort of license Wezness has.

If it's a retail full or upgrade license, there's no issue with switching from 32 to 64 bit.

If it's an OEM license, it may still be poosible to use the original key to activate the 64 bit version, but coming up with installation media may be a bit more of a challenge. (I have no personal experience with this - my licenses are retail.)
My System SpecsSystem Spec
03 Mar 2011   #6

Windows 7 Ultimate x64 SP1

Yeah, I definitely wasn't clear in terms of licensing. If you have an XP license (retail), then it could be reused on another computer. It has nothing to do with the new Windows 7 license. When you install that on the computer, it will be considered in use, and can't be used on another computer at the same time. The disc is just a disc...contains no licensing info, so you could use it a thousand times if you wanted. If you've already used the Windows 7 key on another system, you'll need to buy a new license.
My System SpecsSystem Spec

 W7 32bit to 64bit

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