Lenovo IdeaPad Y410 repair archive in RAR format, about 1.01 MB. The name states only the model, with no motherboard number, revision or note on what is packed inside, so open it with WinRAR or 7-Zip and check the contents first. A file of this size often contains a schematic in PDF form for following voltage rails, signal paths and power-on sequencing. Match the board code and revision on the actual PCB against the document before trusting part values or test points, because a model can use more than one board design.
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.