An archive of repair files for HP hardware (board DA00P6MB6D0). Shared as “PRESARIO CW71(DA00P6MB6D0).zip” — a .zip file, 1.17 MB.
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 @one5technology. 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