Compressed boardview named only by the number 213039-1, with 223139-1 also listed for it; both follow Wistron's five-digit project numbering with a revision suffix. The name gives no laptop brand or model, so identify the device by the number printed on the motherboard. Once extracted, the file opens in a boardview program to locate components, nets and test points. Compare the board number carefully, since similar Wistron codes belong to different designs.
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 @cynetitsolution. 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