Package for Wistron motherboard 12291-2 in a 3.16 MB RAR, with a name pointing to a late display fix, meaning the screen appears only after a long delay at power-on. The board is a Wistron design found in the Lenovo ThinkPad W540 range. Such a fix is usually a corrected BIOS image written to the SPI flash with a programmer. Check the board revision matches 12291-2, ensure the image fits the chip size, and keep a backup of the original dump in case the result differs.
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 @SCHEMATICWORLD. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.