The cause can be almost anything - from trivial problems with the power supply, to serious defects on the motherboard.That is why it is worth taking the equipment for service, because the fault can be trivial and inexpensive to repair. Even if we do not have a guarantee anymore, but our computer still performs well, it's worth servicing,
That's why certain standards apply. In polygraphy and graphics, such standards also exist - appropriate definitions of CMYK colors - key for the appropriate color reproduction.
Specified in advance formats for printing leaflets and business cards, so that they are comfortable and as uniform as possible.
Without standards, even leaflets could be completely unreadable and even repulsive.
This is a very convenient solution, because you can immediately overcome mistakes made by potential customers when placing an order. Often, they send a bad file in the wrong format, with the web printing this error is still captured by the script itself accepting the order.