Compal archive covering two board numbers, LA-6755P and LA-6757P, stored as an 826 KB RAR. The LA-xxxxP pattern is Compal numbering, and Compal builds notebooks for several brands, so the laptop model is not given here. Read the number and revision on your PCB and pick the matching document. A schematic for these boards helps trace the power rails, locate the PWM controllers and MOSFETs, find test points and confirm the startup sequence when a board shows no power.
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 @generalschematics. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.