Boardview for the Casper C300 notebook, covering the D15R main board at revision 2.0, delivered as a 3.20 MB 7z archive. A boardview maps every component, net and test point on the PCB, letting you click a part and follow its connections when hunting a short, checking a missing rail or locating a pad hidden under a shield. After extraction, open it with a viewer such as OpenBoardView, FlexBV or Boardviewer depending on the internal format. Verify that the silkscreen on your board reads D15R rev 2.0, as component placement can shift between revisions.
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 @biosfiles. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.