Service package for Compal motherboard LA-C291P, revision 1.0, carrying the project code AIWB0 B1, in a 7.22 MB ZIP. It sits beside the similar LA-C292P board of the same project, so check carefully which code your PCB shows. Compal prints the LA number and revision on the board surface, often near a corner. The archive likely contains a schematic and perhaps boardview data, which help follow the power-up sequence, measure rails and locate parts. The laptop brand is not named.
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 .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip