Companies like SurfaceProRepair , TechRer , or BIOS-PW.org offer mail-in service.
Here’s a of the process, tools, and reliability for resetting a BIOS password on a Microsoft Surface Pro 4 . surface pro 4 bios password reset high quality
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. Companies like SurfaceProRepair , TechRer , or BIOS-PW