Motherboard schematic for Compal board LA-A992P, 1.08 MB PDF; the name states no laptop model or revision. Compal marks its boards with LA-xxxxP codes on the silkscreen, so the number on the PCB is the reliable way to confirm a match, and the title block shows the revision. Use the document to trace power rails, follow enable and power-good signals, locate components and test points and work out which part is shorting a rail. A PDF viewer with text search helps navigate the net labels.
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 @schematicslaptop. 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.