Compressed boardview, BDV in the name, for a mainboard numbered 14279-1, a Wistron-style number. The name gives no laptop brand or model, so identify the target by the board number silkscreened on the PCB before using it. The RAR is about 184 KB and should hold a layout file for a boardview program such as OpenBoardView or FlexBV. Use it to find parts by reference, probe nets for shorts and locate test points. Pair it with a schematic for the same board.
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 @schematiclaptopramkushwaha. 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.