If you receive this error message, it means your computer's feature in the BIOS/UEFI is preventing changes to certain boot configuration elements for security reasons. To resolve this:
Are you trying to , or are you having trouble with a driver that won't load ? Remove Activate Windows Watermark on Windows 10 bcdedit -set testsigning off
The most obvious sign that your computer is in this state is a watermark in the bottom-right corner of your desktop, which typically reads followed by your Windows version and build number. How to Use bcdedit -set testsigning off If you receive this error message, it means
Boot back into Windows, run the testsigning off command again, and then re-enable Secure Boot if desired. 2. Watermark Still Persists How to Use bcdedit -set testsigning off Boot
Press the , type cmd , right-click on the result, and select Run as administrator . Execute the Command :