If you are using the DSP version of Windows, changing the BIOS (UEFI) settings may invalidate your Windows license authentication.
The DSP version of Windows requires that it be purchased together with some other part, such as a motherboard or CPU, and the license will only be activated if these conditions are met.
For example, if the part is a motherboard, the license authentication will be lost when the motherboard is replaced.
Of course, if you install the DSP version that came with your computer when you purchased it on another computer, the license will not be authenticated.
The Windows DSP version has these disadvantages.
Why does BIOS settings disable license authentication?
For example, the computer I purchased isパソコン工房" and has the DSP version of Windows 11 Home installed.
Parts required for this Windows 11 Home DSP version (hardware) is probably the motherboard.
Differences between Windows 11 "Package version", "DSP version" and "OEM version"
The other day, after changing the BIOS (UEFI) settings and restarting the computer, a message (notification) appeared in the bottom right corner of the screen saying "License activation required."
When I open Settings, it says "You need to activate Windows before you can personalize your PC."
In this state, click "Activate now" and run "Troubleshooting"...
I get the message "Windows couldn't be activated on this device."
Before the license authentication was removed, I disabled the "onboard LAN" in the BIOS (UEFI).
Perhaps disabling "Onboard LAN" caused Windows to think that the motherboard had been changed.
I bought a new LAN card, so I thought I didn't need the "onboard LAN" and disabled it, but it seems that you can't disable it in the DSP version.
After re-enabling "Onboard LAN" and running "Troubleshooting" again, the license was activated.
As such, in the DSP version of Windows, license authentication may be disabled depending on the BIOS (UEFI) settings, so please be careful when changing the settings.
If your license suddenly becomes invalid, first try to remember what you did to fix it. If you buy a new copy of Windows without knowing the above, it will be a waste of money.
*It is okay to disable unused "Network Adapters" in Device Manager.
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