How to get product key of old OS (Win 7) after upgrading to Win 10?

alphanumeric · 11 Oct 2015

hawkman said:

Now that is interesting,
I was under the impression there was a scheduled Task, that was due to be run to remove the window.old file,
MIND YOU that was 30 days AFTER the upgrade was installed.

Roy

I did a clean install, not a rollback. Kari was wondering if the keys got blocked after the 30 day period ended. I was just confirming they weren't. As far as I know they are never blocked as a result of doing the free upgrade.

ffansszi · 12 Oct 2016

So there is no chance to get the key once you reinstalled the OS?

P.S It is indeed a way out to find windows 7 product key.

lx07 · 12 Oct 2016

ffansszi said:

So there is no chance to get the key once you reinstalled the OS?

The last comment on this thread was more than a year ago. Perhaps you should ask your own question.

But to answer your question, no. Probably not (depending what you mean by "the key")

Berton · 12 Oct 2016

My experience is that a clean install would wipe out any reference to the Product Key on Win7 but Win8 and later may have it embedded in the BIOS, possibly even in Vista [have a Dell that came with Vista that has it that way]. But you might search for and download ShowKey from this forum to check. The Dell I mentioned was first Upgraded to Win7 so I could get the Insider Preview and ShowKey makes no mention of the Win7 Product Key, only the original key that is used by Dell when shipped, not the COA sticker Key.

lx07 · 12 Oct 2016

True.

It is October 12 2016 not October 12 2015 though.

Berton · 12 Oct 2016

lx07 said:

True.

It is October 12 2016 not October 12 2015 though.

Also true, last post was October 11, 2015 but the 2 posts this AM resurrected it. I'd think posts should actually be closed after a set time to keep issues more relevant, for example, there was the Version 1511 Ugrade and now a year later is Version 1607.