Filed as a schematic, this 133 KB PDF is named 59C11-2, a code that gives no laptop model, brand or clear board revision. The trailing -2 may be a sheet or variant number, but the name does not say which. Open it in a standard PDF viewer to identify what it actually depicts before using it for repair. If it proves to be a circuit page, compare the reference designators and part markings with the board in front of you before tracing rails or signals.
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 @cyberlanelectonik. 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.