Always back up your BitLocker recovery key before attempting a BIOS reset.
The Microsoft Surface Pro 4 is a powerhouse of portability, but its sleek, sealed design creates a nightmare scenario when you forget the BIOS (Basic Input/Output System) password. Unlike a standard desktop or laptop, the Surface Pro 4 lacks removable CMOS batteries or physical jumper switches to clear the BIOS memory. surface pro 4 bios password reset high quality
Microsoft officially states that it a forgotten UEFI password for the Surface Pro 4. There is no software tool or "master password" provided by the manufacturer for this purpose. If you lose this password and need to change BIOS-level settings (like boot order), Microsoft typically recommends a full hardware replacement. Technical Workarounds (Advanced Users Only) Always back up your BitLocker recovery key before