RAR archive of 2.67 MB covering Quanta board DA0AX3MB6C1, revision C. Extract it with WinRAR or 7-Zip. The name gives no laptop model and does not reveal whether it holds a schematic, boardview or firmware. In the Quanta pattern DA0 marks a motherboard and C1 the revision variant. Before using it to locate test points or diagnose a short, compare the code on the PCB. Any BIOS image should only be written after you back up the original chip.
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 @ITHINKHS. 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.
7-ZipWinRARThe Unarchiver (macOS)