An archive of repair files for Dell hardware (board LA-E993P). Shared as “LA_E993P_1_0_Dell_G7_7588_notebook_cannot_be_started_for_maintenance.rar” — a .rar file, 426 KB.
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 @bartonarquivos. 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)