Most boardview files require a dedicated viewer like BoardViewer or OpenBoardView to open.
Boardview files for this specific motherboard (typically in or .BDV format) are usually hosted on specialized technician forums and document sharing sites:
The designation typically points toward a specific Main Board (MB) configuration, often associated with Lenovo ThinkPad laptops (specifically the T440, T440s, or T450 series architectures) or similar OEM manufacturing runs by Compal or Wistron.