Lost CD Key after repair install of Windows 7

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So I needed to re-install Windows 7 HP x64 on a customer's computer, and stupid me forgot to retrieve the CD key before doing so. Now, the CD key put in there is getting told it's invalid, and Windows is not genuine. I have access to the Inplace Upgrade folder and the old Windows folder, but the SOFTWARE registry key looks to be missing, so I can't seem to use a keyfinder. Is there something I'm missing here, or do I need to shell out some money for another key?

Canadian Luke

Posted 2011-10-27T17:46:20.413

Reputation: 22 162

4If your customer has a license, he must have the key somewhere. Maybe a sticker on the computer? If he bought windows separately, it must be somewhere near the dvd. If not, why should you bother legalizing his windows? – Jens Erat – 2011-10-27T17:50:18.493

Is the SOFTWARE hive the one with the encoded key or is it in the SYSTEM hive? – Synetech – 2011-10-27T17:57:59.670

In the old Windows\System32\config folder, it has the hives there but they're in a TSF format, which I've never seen, so key finders don't seem to want to work on it. Also @Ranon, I believe you're right. There's a Vista sticker on it, and he had a genuine copy of 7 before cause he was running MSE – Canadian Luke – 2011-10-27T18:15:17.087

@Luke You only need a genuine copy to download MSE, I don't think it checks on install. – Scott Chamberlain – 2011-10-27T19:34:14.897

It checks constantly – Canadian Luke – 2011-10-27T20:25:17.860

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Was this system originally Windows 7 from HP? If so you can order a recovery disc set, then you don't need a key, it will install one automatically during recovery...http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00810334&cc=us&lc=en&dlc=en

– Moab – 2011-10-27T20:34:30.300

No, came with Vista – Canadian Luke – 2011-10-27T20:55:25.327

Then where did they get Windows 7 from? – Ƭᴇcʜιᴇ007 – 2011-10-27T22:48:31.287

I am assuming it was bought. I'm not looking for excuses not to, I'm looking for info on if the key would have been saved anywhere – Canadian Luke – 2011-10-27T23:01:33.580

No answers