Boardview for the ASUS K43L laptop motherboard, revision 5.0, packed in a ZIP archive. The name does not state the inner format, so extract it and open it with a multi-format viewer such as OpenBoardView or FlexBV. Boardviews let you locate components by reference, find test points and follow a net across the board to track down a short or a missing rail. Several revisions of this board exist, so check the revision printed on the PCB matches 5.0 before relying on positions.
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 @cynetitsolution. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip