How to Solve X540 Laptop Not Save Bios Settings

invalid@example.com (Ahmad Safari), Ahmad Safari
Fri, 15 Nov 2024 19:34:52 +0000
Bios

In this video we have Asus X540 laptop with a failed battery and as RTC voltage gets provided by the device’s battery in these models and they don’t have RTC batteries themselves, these laptops don’t save Bios settings such as time and date. And by plugging in the adaptor, they automatically turn ON.
So in order for the laptop to save Bios settings without connecting the internal battery, you need to apply RTC voltage to the board.