Boardview archive, 113 KB RAR, for motherboard 17833-1, labelled BDV for boardview. The number follows the Wistron scheme, a board maker supplying Dell, Acer, HP and others, though no laptop model is stated. A closely related 17833-1M variant exists, so read the PCB silkscreen carefully before relying on this one. Extract it and open in a boardview program to search components by reference, highlight nets and locate test pads while measuring rails or hunting a short to ground.
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 @cyberlanelectonik. 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.