You cannot rely on software to tell you which board you have. Flip the motherboard over. Near the RAM slots or under the M.2 SSD slot, you will see white silkscreen text.

Load test: disconnect suspicious loads (motors, speakers) and observe changes.

: When a component fails, knowing how circuits are interconnected is invaluable. Schematics show the relationships between components, making repair work more efficient.

What are the on your 3V and 5V standby rails?

The laboratory power supply immediately hits the current limit when injecting voltage at the DC-In.

laptop. This document is essential for hardware repair, detailing voltage rails, power states, and component layouts. Key Schematic Details

If you download a file for the NM-C561 and it is only 200KB, it is likely a (CAD drawing). If it is 2MB+, it might be a PDF Schematic . If it is a .exe file – delete it immediately – it is malware targeting repair shops.