Boardview archive for the Quanta R63 project, board number DA0R63MB6F1, labelled MB-E in the name, which probably marks a main board variant. Quanta uses the DA0 prefix on its mainboards, and the matching schematic identifies the R63 as an HP Pavilion 15/17 platform. A boardview shows part placement, pin nets and test points, so you can probe rails and locate a short quickly. Open it with OpenBoardView, FlexBV or a similar viewer, and confirm the board code on the PCB first.
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 @alischematics. 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.