Schematic in PDF for the N61B board, AMD variant, delivered as a 2.54 MB RAR archive. The name gives no laptop brand, so identify the device by the board marking. Circuit drawings like these let a technician follow power rails, check the sequencing of enable and power-good signals, find fuse and MOSFET locations, and work out why a rail is shorted. Confirm the AMD platform and board name match your unit, because related boards may use other chipsets or layouts.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)