RAR archive labelled only with the Lenovo E50 model name, 467 KB in size. The name gives no board number, revision or document type, so the contents are most likely a schematic or boardview set but this must be confirmed after extraction. Open it with WinRAR or 7-Zip and check what is inside before planning a repair. Compare any board number found in the documents with the one silkscreened on the mainboard, because one model name can cover several board designs from different ODMs.
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 @IT_SERVICE_WORLD. 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.