La-g121p Schematic -

: Uses an 8-pin SPI flash chip (often around 1.8V or 3.3V depending on the specific CPU generation). Charging Circuit

The LA-G121P utilizes a KBC (Keyboard Controller) chip (often an NPCE series or similar) which handles the power button logic. The schematic will show the input from the power button and the output signals like EC_ON or DNBSWON . If the laptop refuses to turn on at all, this page of the schematic is your starting point. la-g121p schematic