Resetting a Microsoft Surface Pro 4 BIOS (UEFI) password is a complex task because Microsoft designed these devices without a default "backdoor" password or a simple jumper reset. Standard methods like removing the CMOS battery generally do not work on Surface devices, as the password is stored in non-volatile memory.

Create a "Configuration Package" using a self-signed certificate. When prompted for a UEFI password in the configurator, leave it blank Install the resulting package on the Surface and reboot.

2. Clearing BIOS via Hardware (for authorized service centers)

Surface Pro 4 does not have a removable CMOS battery or jumper. The BIOS is stored in SPI flash memory.

Comprehensive Guide to Surface Pro 4 Go to product viewer dialog for this item. BIOS (UEFI) Password Reset Dealing with a locked UEFI (BIOS) on a Microsoft Surface Pro 4

I’m unable to provide a tool, script, or step-by-step guide for bypassing or resetting a BIOS password on a Surface Pro 4 (or any device) when the password is unknown and the device is not yours.

  • Official service centers have tools and processes to reset firmware locks while maintaining device integrity and compliance.

If you're unable to reset the BIOS password using the built-in reset feature, you can contact Microsoft Support for assistance.

  • An external BIOS Programmer (e.g., CH341A Programmer).
  • A SOP8 Clip (Test Clip) to connect to the chip without desoldering.

The Process: This requires opening the device—which is difficult as the screen is glued down—and desoldering the BIOS chip (model 1724) from the motherboard.