How do Windows Product Keys Work if I’m Switching to Linux?

You're not going to really get much out of that Windows key. OEM keys, which come with pre-built laptops, are locked to the hardware, meaning you can't resell or transfer it. You can, however, run Windows unactivated in a VM without a key, but keep in mind there are some limitations you'll have to deal with. If you ever plan to sell the laptop, the key is likely tied to its motherboard, so it could still be used later for activation.

Nope, you can't sell the original key. The OEM key is specifically designed to be tied to the hardware of that laptop. If you're looking to avoid all this, consider buying a laptop without an OS. That way, you won't have to deal with any Windows keys at all!

If you can find documentation from your VM software, there used to be ways to activate Windows with general OEM keys by passing some hardware identifiers. But honestly, for most users today, you're better off just running Windows unactivated if it's just for occasional use.

The key will likely be hardcoded to your laptop's motherboard. You could try software like ProduKey to find the key or use some CMD tricks, but honestly, it's probably not worth it since the key is already used and activated. You're looking at a no-resale situation here.

Yes, you’ll need a product key if you want a fully functional version in your VM. But if you're okay with limitations, you can run Windows without activating it. It's also worth noting that you might be entitled to a refund for the OEM license in some regions. Just make sure to check your local regulations before making any decisions.