Boardview for the Wistron board 11263-1 in its UMA version, meaning integrated graphics without a discrete GPU, stored as an 884 KB .bdv file. The five-digit dash-number style is Wistron board numbering; no laptop brand is given in the name. Boardview data maps component positions and nets on both PCB sides, helping locate test points and parts on a shorted rail. Open it in FlexBV or OpenBoardView, and make sure your board is the UMA variant of 11263-1 before relying on it.
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 @laptopbios21. 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.