Small RAR archive, 334 KB, for an HP 15 laptop tagged X12a, which is probably a board or project code. The name does not say what is inside, and the small size suggests a firmware dump or compact boardview rather than a full schematic. Extract it and check the file type before use. If it is firmware, compare its size to the SPI chip and back up the original. Match any board code printed on the PCB, as the HP 15 range spans many motherboards.
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)