Search for the specific hex blocks containing the NVRAM variables linked to the supervisor password (often indexed under structures like Setup or MeRegion ).
Carefully remove the fragile Surface Pro 4 screen to access the motherboard. surface pro 4 bios password reset high quality
Turn on the Surface and hold the button to enter the UEFI menu. Enter the wrong password 3-4 times. Search for the specific hex blocks containing the
: Reach out to Microsoft Support or a professional technician. They can guide you through the process or perform the reset for you. surface pro 4 bios password reset high quality
: Save the configuration as an .msi file and run it using msiexec.exe .
Once you regain access to your Surface Pro 4 UEFI, follow these best practices to avoid future lockouts: