You will need to provide proof of purchase to Microsoft Support.
The Surface Pro 4 has jumper pins on the motherboard that can be used to reset the BIOS password. You'll need to:
When you set a BIOS password on a Surface Pro 4, it is written to a sector of the firmware. If you lose it, Microsoft’s official solution is to replace the entire motherboard. Here is how to fix it yourself. surface pro 4 bios password reset high quality
The Ultimate Guide to Surface Pro 4 BIOS Password Reset Locking yourself out of the Surface Pro 4 UEFI (BIOS) can completely halt your workflow. Microsoft designs these devices with strict enterprise-grade security. This means there is no simple "backdoor" password or factory master key.
This article provides a high-quality, comprehensive overview of how to deal with a locked Surface Pro 4 UEFI, covering official methods, alternative workarounds, and advanced hardware procedures. Understanding the Surface Pro 4 UEFI Security You will need to provide proof of purchase
Given the extreme difficulty of resetting this password, proactive management is your best defense.
Surface Pro 4 Go to product viewer dialog for this item. BIOS/UEFI Password Reset Report Resetting a forgotten UEFI (BIOS) password on a Surface Pro 4 If you lose it, Microsoft’s official solution is
Knowing these details will help me point you to the safest solution for your specific device.
Because the password resides permanently on a physical chip, the only definitive DIY method to reset a forgotten Surface Pro 4 BIOS password involves hardware manipulation.