: When a large file (like a game, high-definition video, or software suite) is too big for a single upload, it is split into "pieces." You usually need all numbered parts (e.g., PQ12Fi.7z.001, PQ12Fi.7z.002) in the same folder to extract the contents.
Do you have the of this file, or are you trying to identify the source where it was downloaded?
: Look for files with the same name but different extensions (like .001 , .002 ) or similar random strings.
: Right-click the file and select "Extract Here." If it is a standalone archive, it will open; if it is part of a set, the software will prompt you for the "next volume."