
On newer Windows 8 and 10 computers, the key isn’t stored in software where it can be wiped, or on a sticker where it could be smudged off or removed. If the Key Is Stored in Your PC’s Hardware
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In other words, if it came with Windows 7 Home Premium, you can’t install Windows 7 Professional. It’ll all happen automatically.īe sure to use the same version and edition of Windows the computer came with. You don’t even need to know it–assuming you’re installing the same edition of Windows the PC came with, it should automatically activate and work without you needing to enter a key. The key for the version of Windows the PC comes with is stored in the computer’s UEFI firmware or BIOS.


The one in the registry and key-viewer application is a red herring. The actual key is on a certificate of authenticity (COA) sticker on your PC or its power supply. If your PC uses this, the product key on your PC–the one stored in the registry, and the one key-viewer applications display–will be different from the actual key your PC needs.

All you need is access to the disk drive from a working computer. The great thing is that you can even recover a key, even from a computer that won’t boot anymore. We can only assume that they don’t want anybody to re-use a key from an old computer. We’re not really sure why Microsoft went to great lengths to make it difficult to see the product keys for their software, especially since they are stored right in there in the registry and can be read by software, if not by humans.
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RELATED: Beginner Geek: How to Reinstall Windows on Your Computer Luckily, we’re here to help.Īs you can see in the screenshot above, the product ID is stored in the registry but is in a binary format that can’t be read by humans unless you are some sort of Cylon. It’s just not easy to find, and it’s impossible to read without some help. If you’re planning on doing a reinstall of Windows but can’t find your product key, you’re in luck because it’s stored in the Windows Registry.
