What Does PC Load Letter Mean?
The phrase “PC load letter” is a printer error message on some mostly obsolete types of HP laserjet printers. Here, “PC” stands for “paper cassette” and the error indicates that no letter-sized paper is available for a print job with a letter size. The error message is instructing the user to load a letter-sized paper into the printer.
Techopedia Explains PC Load Letter
After its common use in the 1999 film “Office Space”, the phrase “PC load letter” became somewhat of a meme when talking about frustrating, vague or confusing error messages and technological malfunctions.