Generic boardview archive whose name gives no model, brand or board number, so its contents must be identified after extraction. The ZIP is 494 KB, a size typical of a single laptop or desktop board layout. Boardview files display part locations, net names and pin connections and are used to find test points, follow power rails and pinpoint shorted components. Depending on the format inside, it opens in OpenBoardView, FlexBV or a similar viewer. Compare the board number shown in the file with the PCB silkscreen before working from 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 @LaptopsBoardview. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.