BRD boardview for board 14278-3M, delivered as an 85.4 KB ZIP, with no device model stated in the file name. The number follows the Wistron pattern, and the -3M suffix marks a different revision from the -2 version of the same design, so placement may differ. Load it in OpenBoardView, FlexBV or a similar viewer to find components, follow nets between chips and pick probing points while diagnosing a power fault. Check the silkscreen on the board for the exact number and suffix before trusting the layout.
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 .zip file
Compressed archive that every operating system opens without extra software.