Bcdedit -set Testsigning Off

The bcdedit /set testsigning off command disables test signing mode. When you run this command, you're essentially telling Windows to only allow drivers that are digitally signed by a trusted publisher to be installed and used.

Windows enters "Test Mode" when the testsigning option is set to ON . This mode allows the system to load and run drivers that have not been digitally signed by Microsoft—a common necessity for developers testing new hardware or users utilizing specialized, uncertified legacy drivers. bcdedit -set testsigning off