Windows 10: How to get product key of old OS (Win 7) after upgrading to Win 10?
I have no idea what you are talking about. What is a "New Activation"? On some other hardware it had never been installed on? No, then. I've not bought any new hardware to test installing a legacy OS I've no interest in using.
I got the boring 0xC007C0008 key blocked error (twice) on 10 and just moaned at MS until they gave me a new key.
I have however restored both Windows 7 and 8 onto their original hardware and they were activated fine. If you want me to restore onto completely new hardware then I'm afraid I can't oblige as I don't have any and couldn't be bothered anyway..
Oh come on, now...you mean you wouldn't try it if they sent you a new Windows 10 from the factory laptop to try it on? ;-) I wish I had a dozen computers that never had Windows 10 on them to try a few things I am curious about.
Here's the deal. Party A says - nope won't work. Party B says - there's no problem doing it, I have myself, a couple of times. Party C needs or wants to do it for some reason.
Party C can just believe Party A and be out of luck. Or they can hope Party B is right and try it. If Party A turned out to be correct, all that Party C has lost is a couple hours of time. If Party B is correct - big win for Party C. Yes, I have been recently helping my daughter with her algebra homework.
So, dear reader....if you want/need to go back to your previous OS - the choice is yours.
No, I don't mean new hardware. I mean activation on the same PC, on which you already had it activated before. But: Activating it again! Another time. Not using an image, where Windows already is activated. But really activating it again.
Kari is saying, that the old OS was no longer activatable, but I don't understand how that fits to that other people could still use the previous OS without problems.
I can only provide my experience. I upgraded my 8.1 Pro to 10 Pro on my main system when it came out to force myself to use it and get used to it. This week I formatted and re-installed my 8.1 Pro and it activated over the internet with no issues.
Or how that would fit into the fact that computer manufacturers must provide support for the OEM Windows on the computers they sell, but are only required to support the operating system that the computer was sold with. In order for the manufacturer to fulfill their agreement with Microsoft, it must remain possible to return that computer to the OS that it came from the factory with - at least for as long the manufacturer has agreed to support it.
And probably thousands of users have done the same thing. Including myself, more than once.
No I was just keeping them for the case that 10 went down hill, but I'm keeping it. It defies physics, it's gaining speed going uphill. The thing is 10 runs better on my Win7 laptop than 7 ever did or will, and on my prior 8 machine it uses a lot les resources(CPU which is my bottle neck).
Well, Windows 10 works far better on my rMBP than the newest OSX version El Capitan (I dual boot). The only thing OSX is better at is battery life.
Cliff S said:
My Macrium backup for 8.1 is 17GB. For 10 it is 7GB (same software).
What can I say? I'm a convert.
Now if someone would just give me one of those Surface Books I'd be happy for at least 2 years (a HoloLens also perhaps 3 )
Actually I'm quite interested in Kari's vid.. my own experience is installing the upgraded Win8.1 key in a VM on the clean installed Win 10 was fine.(I tend to keep each key PC specific, even running VM's on them)
I suspect the issue is transferability.... on same hardware it's limitless (well theoretically) as it's determined by the activation count algorithm regarding hardware changes (which as we know is vastly different for OEM, Upgrade and Retail keys)
Already recorded two reinstalls of 8.1 Pro on the same machine, one install on a new machine, all activated using the same retail key. At the moment recording the upgrade process to 10, then finally the new install of the original 8.1 which will no longer accept my product key.
Using one of my available 8.1 keys for this but what the hell, science is important
It might take all night before I have the video here. It's half past 8 PM here now but luckily I am an insomniac.
I started the upgrade from Win 7 Home Premium to 10. I entered the product key, but get the message "Product Key didn't work". I have repeated this several times - I have the original disk & label, checked the key is correct via Belarc Advisor, have...
I'm trying to upgrade a desktop Windows 7 Pro 64bit OEM, activated SP1, to Windows 10.
I will have several machines to upgrade, and my fairly slow connection is capped except for overnight downloads, so I've downloaded the 64bit Techbench...
I'm curious, I might have to try this on an extra partition...
My computer is fully activated on Pro version. I've also done a clean install after the upgrade and activated immediately just fine.
So, let's say I bungled and clean installed...
I'm wondering, if after upgrading a PC to windows 10, can I use the old Windows 7 product key to install windows 7 on another PC?