Sony Vaio Hard Drive failed, bought a new ssd hard drive for computer. Used a borrowed Windows 7 Home Edition SP1. Did a fresh install. Tried to use the product under the laptop. (Invalid product key)
Then downloaded ProduKey v1.93 to get the product key from the failed hard drive. Tried that product key. (Product already in use) Bought a product key not from Ebay and that product key was blocked my Microsoft. Contact the place I got the
product key and they gave me another key, that was also blocked my Microsoft. I erased the ssd hard drive and did another install from a windows 7 installation DVD. So, I need some assistance with activating my Windows 7. Please don't tell me to upgrade, not
interested in Windows 10 and I couldn't afford to do an upgrade.
Product key finder programs do not find a useable product key to reinstall the OS.
That product key was used at the factory on multiple machines.
Warning:
You do not buy a Product Key by itself, as they are normally stolen/pirated, Volume Licenses which are not for private use, or MSDN keys which are not to be sold by the original subscription holder.
Make sure that you buy the complete sealed package (DVD, license)
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If you want to reinstall the OS correctly, follow these steps:
You have to reinstall the EXACT same edition as is on the COA sticker.
Download the correct ISO file and make your own disk and use the Product Key that is on the COA Sticker.
https://www.heidoc.net/joomla/technology-science/microsoft/67-microsoft-windows-and-office-iso-download-tool
Download: Windows ISO Downloader.exe
Version: 6.00
Release Date: 11 April 2018
Requirements: Windows 7 or newer, .NET Framework 4.x, Internet Explorer 8 or newer.
Important: As of Version 6.00, we're adding back an experimental feature to generate links for Windows 7 and Office 2010. Generation of new links for these products is throttled, and not every download is always available in every language. New links are generated on a first come first served basis, with users who enable the idle resource donation getting preferential treatment. If you have further questions, please use theWinCert Forum to get in touch, so that other users can also benefit from the discussion.
And here are instructions on how to burn ISO images to disk:
http://www.snapfiles.com/get/ISORecorder.html
You change the Boot Order in the BIOS to be able to boot from your installation media:
How to Boot Your Computer From a Disc or USB Drive
Then do a clean install:
http://www.sevenforums.com/tutorials/1649-clean-install-windows-7-a.html
The COA sticker is either on the underside of the Laptop or in the Battery Compartment.
With a Desktop it is either on the side, rear or top of the Computer Case.

Using the downloaded ISO file Method may require phone Activation.
If it does require phone Activation, do not follow the Auto Prompts, but hold on for a real person to explain to as to what has been done for re-installation purposes
"How to Activate Windows 7 by Phone"
http://www.sevenforums.com/tutorials/18715-activate-windows-7-phone.html
The above method also will require you to go to your Computer Manufacturer's website > Support and Downloads Section > locate your Model Number and Operating System > then download and install the latest Drivers for it.
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Using the USB method in conjunction with the above Windows 7 download:
http://www.sevenforums.com/tutorials/2432-usb-windows-7-installation-key-drive-create.html
"How to Get and Use the Windows 7 USB/DVD Download Tool"
http://www.sevenforums.com/tutorials/31541-windows-7-usb-dvd-download-tool.html
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And this is very good and easy to use:
Rufus - Create bootable USB drives the easy way
Cheers.