: Diagnosed by checking the resistance to ground on major coils (Inductors). BIOS Corruption
: Often related to the input MOSFETs or the charging IC (PU series). Short Circuits on Main Rail la-g121p schematic
: Generating +3VALW and +5VALW, which are critical for the initial power-on sequence. BIOS Configuration : Diagnosed by checking the resistance to ground
: Manages the battery rail (B+) and switching between AC adapter and battery power. Common Troubleshooting Points la-g121p schematic