Small archive for Compal board LA-D703P carrying the platform code BDL50, marked OK in the name, which suggests a checked file. At only 33.0 KB it is too small to be a full BIOS and is more likely the embedded controller firmware or another small chip dump. Use it when the EC flash is corrupted and the laptop will not power on or charge. Confirm the board number on the PCB, save the original chip contents, and check that the file size suits the target 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 @biositechyangiyer. 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)