Boardview for Compal board LA-996P in a 1003 KB RAR archive. The name gives no laptop brand or model, so identify the target by the Compal number printed on the mainboard. Compal uses the LA- prefix with a four-character project code, and the same board often appears in machines from several brands. Once the file is open in a viewer such as OpenBoardView or FlexBV, you can locate parts, check which components share a net and find measurement points when tracking down a short or a missing supply rail.
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 @BoardSchematic. 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.