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As noted in this YouTube video , improper BIOS reflash can lead to issues like the touchscreen failing (displaying firmware 000000) or Intel ME errors.
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
Keep holding Volume Up until the UEFI screen appears. surface pro 4 bios password reset high quality
Companies like SurfaceProRepair , TechRer , or BIOS-PW.org offer mail-in service.
To truly remove a UEFI password lock that is preventing you from changing boot settings or Secure Boot, you must physically interact with the motherboard. This is risky and requires technical skill.
Several users on technical forums have reported success using this method on various Surface models, including the Pro 4. The process is advanced but achievable for a determined user: ✅ As noted in this YouTube video ,
How to Reset a Surface Pro 4 BIOS Password Safely and Effectively
If software methods fail, hardware manipulation is the only definitive way to clear the chip. This requires micro-soldering skills and specialized tools.
Unlike older legacy desktop computers, modern tablets like the Surface Pro 4 employ robust security architecture. This high-quality guide covers everything you need to know about the Surface Pro 4 BIOS password architecture and provides actionable, safe methods to resolve lockout issues. Understanding Surface Pro 4 UEFI Security Architecture However, a deep power drain can sometimes glitch
Disclaimer: Attempting to modify the hardware of your Surface Pro 4 may void any remaining warranty. If you are struggling with a specific code, let me know: What or code is displayed on the screen? Do you have proof of purchase for the device? Is it a work or personal device ? I can help guide you to the next step.
Before opening the device, exhaust all logical possibilities. UEFI passwords are rarely entered by accident; they are usually set by IT administrators or privacy-conscious users.

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