Boardview for the Compal motherboard LA-J261P, revision 1.0, packed in a small 248 KB ZIP archive. Compal uses LA-xxxxP numbers on boards it builds for brands such as Acer, Dell, HP and Lenovo. A boardview shows component placement, pin nets and test points on both sides of the PCB, so you can find a shorted capacitor or follow a rail between parts. Open it in a viewer such as OpenBoardView, FlexBV or Boardviewer, and confirm the PCB silkscreen carries the same number and revision 1.0.
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.