Surface Pro 4 Bios Password Reset High Quality →
To reset or bypass this protection, you must use authorized software recovery paths, official enterprise tools, or hardware chip reprogramming.
Unlike older laptops, the Surface Pro 4 does not use a traditional CMOS battery that you can simply unplug. The BIOS password is saved in non-volatile RAM (NVRAM). However, a deep power drain can sometimes glitch the chip into a clear state. Steps to Drain the Power
does not have a CMOS battery or jumper that can be easily removed to clear settings.
If you cannot access Windows and are completely locked out, a deep capacitor drain can sometimes force the non-volatile memory to clear its temporary registers. While this does not wipe the encrypted chip directly, it can resolve glitches where the UEFI misreads a correct password. Shut down the Surface Pro 4 completely. surface pro 4 bios password reset high quality
The Surface Pro 4 uses UEFI, a modern replacement for traditional BIOS. When a security password is set, it is stored in a non-volatile flash memory chip (often a Winbond chip) on the motherboard, designed to persist even after the device is powered off or the battery is disconnected. 1. Initial Steps: The "Easy" Way (Before Dismantling)
Unless you own a hot air station, SPI programmer, and have micro-soldering experience, on a device you need.
When software methods are impossible, professional repair technicians use hardware-level reprogramming. The Surface Pro 4 stores its UEFI configuration and password hash inside a physical EEPROM chip on the motherboard. To reset or bypass this protection, you must
The chip is placed on a programmer to overwrite the original BIOS region with a "clean" one, effectively removing the password.
Method 2: Factory Reset via Recovery Mode (Bypassing Windows Password Only)
If software methods fail, hardware manipulation is the only definitive way to clear the chip. This requires micro-soldering skills and specialized tools. However, a deep power drain can sometimes glitch
If you can tell me if you have tried or if you have prior experience with soldering , I can suggest the best path for you.
the raw .bin file in a hex editor or a specialized auto-patcher tool.