Boardview for a Y0E mainboard, revision C, packed in a 182 KB RAR; BDV stands for boardview. Y0E follows Quanta project naming, though the laptop model is not given. A boardview shows component placement, part names and net connections, letting you locate test points, follow signals and find what sits on a shorted rail. Open it with OpenBoardView, FlexBV or a similar viewer after extracting, and check that the PCB revision reads C so parts and nets line up.
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 @schematicslaptop. 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.
7-ZipWinRARThe Unarchiver (macOS)