K-Lite Codec Pack Mega installer, version 18.4.8, a 63.2 MB Windows executable. The Mega edition bundles audio and video codecs, DirectShow filters and Media Player Classic, so a workshop PC can play almost any media format. It is useful for testing video output, audio and HDMI on repaired machines. Run it on Windows and pick components during setup. It is general utility software, not board-level repair data, so it has no tie to any particular device.
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 @laptopschematics. Enginerys does not host this file.