Boardview for Compal mainboard LA-E822P, revision 02, a board found in Lenovo laptops; the model itself is not named in the file. Compal is the ODM, and its LA-xxxxP codes are printed on the PCB along with the revision. Open the .cad file in OpenBoardView, FlexBV or a similar viewer to search designators, highlight nets and find test points when following power sequencing, a dead rail or a shorted component. Confirm that the code and revision on your board match before working from it.
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 @boardviews. 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.