This video explains how to check the power status of your system by observing the LED indicator on the AC adapter. It highlights the meanings of different LED colors and what they indicate about the power supply.
Connect a known good AC adapter to the system and check the LED indicator. Off means no power is connected. Green means power is operational.
Flashing amber indicates a problem with the power supply. Flashing green indicates the power supply is mismatched with another power supply.