can you Install A win7 64Bit UPGRADE PACK over a 32 bit win7?

I was wondering if you could install a Windows 7 64 bit upgrade pack over a 32 bit Windows 7

i was just wondering if it was possible

You can install a different bit version but only as a clean install. There is no upgrade route from one bit version to the next. I hear there are too many differences that would cause problems down the road to allow one bit version to install over the other.

thank you, so would i have to buy a full version?

If you are using the same edition and changing bit versions, you don't need to buy anything. The activation key you are currently using will activate either bit versions. All you need to do is install the same edition of either bit version and activate with the same activation key you are currently using.

OEM installs require a sticker to be placed somewhere on the case that shows the activation key. If you don't know the activation key you are using there is software that will show you the activation key that was used.

A few apps that will show you the key used.

1. Speccy
2. SIW

If you are simply switching over from, for example, W7 Home Premium 32-bit to W7 Home Premium 64-bit then, as Clifford said, it's allowed under your current license but you will need the 64-bit software if you don't have the DVD. You can find links to W7 SP1 >>HERE<< to download and burn if you need it.

Yeah, I forgot to mention that part. :/ Thanks TM.

the thing is is that ive lost the windows disc so thats why i was gonna buy ab upgarde as it was cheaper than the full.

I am afraid there may be some confusion here.

That is NOT necessarily true at all. It depends on what type the original license is.

If a full "Retail" license, then both 32-bit and 64-bit installation disks come in the box and you are allowed to install one OR the other. Not both at the same time. You can, with the retail license, change (with a fresh install) from 32 to 64-bit with no additional purchases.

HOWEVER, OEM licenses are sold individually. When you buy OEM (or with OEM preinstalled on your pre-built system), you must choose 32-bit or 64-bit at the time of purchase. You only get one installation disk. If you desire to change later, you MUST buy a new license.

Well, then you will need to buy an upgrade disk and it should work.

Win 8 is due out soon and the media edition should sell for $40 in most countries. I would consider waiting if you can't find the 64-bit W7 upgrade disks for around that price.

Can you provide evidence plainly written out by Microsoft. The OEM sticker on my case does not have a designation between 32 or 64 bit. Windows 7 may not ship with both version of install disk but that doesn't mean the activation code can not be used to install either one. If you can provide evidence, i will not continue spreading misconception on the topic.