HP boardview in BDV format for the board marked R13J-MB-B. The name gives no laptop model, so match the R13J-MB-B marking on the PCB itself before trusting it. Boardview viewers open the file and show part placement, net names and connections, which helps when tracing a short on a power rail, locating a test point or finding a replacement component by its designator. At 912 KB it is a single compact layout file with no schematic included, so you may want the matching schematic alongside it for signal descriptions.
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 @boardviews. Enginerys does not host this file.
How to open a .bdv file
Text-based boardview produced by Honhan / Hon Hai test tooling, with lightly obfuscated content.