Is your PC date and time constantly resetting, or are you getting Reboot and Select Proper Boot Device errors?
In this tutorial, learn how to safely replace the motherboard CMOS battery and fix BIOS settings. When the battery dies, BIOS often resets to CSM (Legacy) mode. We will guide you step-by-step on how to switch back to UEFI mode for Windows and boot your PC smoothly.
What you will learn:
- What is a CMOS battery and symptoms of a dead battery
- Best replacement CMOS battery (CR2032)
- Step-by-step motherboard battery replacement guide
- How to change BIOS settings from CSM to UEFI
- Save and successfully boot into Windows
Timestamps:
00:00 - Introduction
00:45 - Dead CMOS battery symptoms
02:15 - Best CMOS batteries (CR2032)
03:30 - Motherboard battery replacement guide
05:10 - BIOS Reset fix: CSM to UEFI
07:20 - Booting PC and final check
08:15 - Outro and Thanks for watching
Recommended Batteries:
- Panasonic CR2032 3V Lithium
- Maxell CR2032
- Sony / Murata CR2032
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