Quanta schematic for the project coded NJF, supplied as a 7.17 MB PDF. Quanta Computer names its laptop platforms with short letter codes like this, and the code usually appears on the PCB silkscreen as a DA0... number. The name does not say which brand used the board. Use the schematic to follow rails from the adapter input through charger and VRM stages, check signals and part values, and confirm that the project code on your board matches before working from it.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematiclaptopramkushwaha. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.