Want to install my used SSD. The Win7 on SSD has register key that has been used to upgrade another computer to Win10.

Gma T

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Aug 20, 2012
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Want to install my used SSD in Dell Optiplex 780. SSD has Win7 32bit and I want to install 64bit. Problem: the Win7 32bit on SSD has register key that has been used to upgrade another computer to Win10. The registry key on the Dell is an OEM. I'm afraid if I install 64bit with an OEM disc Microsoft will not let me use my OEM key. I can't afford a retail copy.
 
The key from windows 7 is no longer valid for 7 once you upgrade and keep 10 for a time. I think... On the up side, there are places such as Kinguin.com where you can pick up keys relatively on the cheap. Heads up though, sites like that are considered "grey market" and the key you're buying may not be genuine, although they do sell genuine keys and do their best to weed out the "black market" keys, it still happens, on the other hand, they sell warranties on their keys, so if you buy a warranty with your key, you're not necessarily out of luck, no warranty though, tough luck if microsoft bans that key. Also, even with the warranty, you could still potentially get key after key with no luck being genuine, course, the first one could be genuine. There's really no way to know what you're getting.
 

Gma T

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Aug 20, 2012
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I get that. After upgrading my desktop to Win10 I used my Win7 upgrade disc to upgrade my laptop from XP. I bought a key for that Win 7 and Microsoft would not accept it.
 
That may be odd depending on where you got your key. If you got it from a reputable dealer and have some proof of purchase, I see no reason why Microsoft wouldn't accept it. You may have to call in to activate, but they should work with you. Can you skip the key in the upgrade process? Sorry, it's been a long time since I last did anything like that between xp and 7...