Archive for the HP EliteOne 800 G2 23-inch touch all-in-one, compressed into a 20.7 MB RAR file. The name does not specify the contents, which may include firmware, schematics or other service material, so check them after extraction. For a firmware image, the usual approach is to write it to the SPI flash with a programmer when the unit does not start. Read and save the original chip contents before erasing, and confirm that the board inside matches the 23-inch touch version stated in the name.
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 @hrtechno. 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.