If you recently replaced your motherboard, Windows thinks it is a new PC. Go to Settings > System > Activation , click Troubleshoot , and select "I changed hardware on this device recently" to migrate your digital license. Frequently Asked Questions Can I use a Windows 10 key to activate Windows 11?

If you need help resolving a specific activation error on your computer, tell me the you see. I can also help you figure out if your device is eligible for a transfer if you

Depending on how you acquired Windows, your key might be stored in different locations: Built-in (OEM):

Often occurs when trying to upgrade from Windows 11 Home to Pro using an invalid or mismatched key.

You may see Windows 11 Pro keys for as little as $10-$20 on sites like Groupon, Kinguin, G2A, or other key marketplaces. While many users have reported that these keys work, there are significant risks to understand.

: Your system is activated and tied to your Microsoft account or hardware signature.