Reactivate Windows license after motherboard replacement
New motherboard and Windows reports as not activated. Whether the license can be saved depends on the license type. Here are the steps for reactivation and the trick that helps beforehand.
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Short answer: After a motherboard replacement, Windows often reports itself as not activated because the license was tied to the hardware. With a retail or volume license, it can be reactivated; with an OEM license, it cannot. The path is through the Activation Troubleshooter, provided the license was previously linked to a Microsoft account.
Why the motherboard even matters
When activating, Windows generates an identifier from several hardware components and stores it along with the license on Microsoft's servers. The motherboard carries the most weight in this identifier. If you replace it, Microsoft sees a different computer.
A graphics card, RAM, or an additional hard drive usually doesn't trigger this. The motherboard almost always does.
The license type is crucial
Whether reactivation is possible depends solely on what type of license is on the computer:
- OEM: came with the computer from the manufacturer and is permanently tied to that motherboard. After replacement, it is consumed. This is not a matter of goodwill, but the core of this license type.
- Retail: tied to you, not to the hardware. Reactivation is intended.
- Volume license: also transferable, usually via a central activation service in companies.
You can find out which type you have by opening the command prompt as an administrator and typing slmgr /dli. The output will show the channel description.
How to reactivate step-by-step
- Open Settings, then System, then Activation.
- Select Troubleshoot. This option only appears if Windows reports itself as not activated.
- Click on I have recently changed hardware on this device.
- Log in with the Microsoft account to which the license was previously linked.
- Select the old computer from the device list and confirm that it is the same device.
The crucial point is in step four. Without a previous link to a Microsoft account, the old device will not appear in the list, and this path is blocked.
"I never linked the license to my Microsoft account - after the motherboard replacement, I was left without the easy reactivation path." A user describes why he now sets up this link first on every new computer before anything else is installed.
The tip that helps beforehand
Link the license while the computer is still running. Under Settings, System, Activation, you will find a note on whether a digital license is connected to your account. Two minutes of effort before the rebuild will save you a lot of trouble afterwards.
If reactivation doesn't work
If the computer remains unlicensed, telephone activation via the assistant can help. Keep your invoice ready. If it is an OEM license, this method will also not help, because the binding to the old motherboard is intended.
In that case, you need a new license. Windows 11 Pro costs €85.99, Windows 10 Pro costs €54.99. Both are freely transferable licenses - unlike an OEM version, they will also survive the next motherboard replacement. We provide complete documentation so that the license remains verifiable.
The article on Windows license types explains which license type behaves how. The difference between a mere key and a genuine license is covered on the Key vs. License page, and all other questions on the Windows Guide.
