Boardview file for the Quanta H98M platform, motherboard number DAH98MMB8D0, supplied in .cad format and labelled BDV. The DA...MB pattern is Quanta's standard board numbering, with the trailing characters indicating the PCB revision, so the number silkscreened on your board should match exactly. A boardview lets you click a part or net and see where it sits on both sides of the PCB, which speeds up finding test points, tracing shorts and locating missing components. Open it with a viewer such as OpenBoardView, FlexBV or a similar tool supporting this format.
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 @notebookschematic. Enginerys does not host this file.
How to open a .cad file
GenCAD text export, the usual format for Compal, Quanta, Wistron and Dell / HP / Lenovo laptop boards.