Filed under schematics, 100bgq100 is a 113 KB PDF named with a power component part-style code and no reference to a laptop model, board number or revision. A related 100bgq045 document is also indexed, so the final digits probably mark different voltage grades of one family. Technicians use such sheets to read forward and reverse limits, pin assignment and package drawing before testing or replacing a rectifier. Opens in any PDF reader; confirm the exact code stamped on the part first.
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 @cyberlanelectonik. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.