Make PC startup as fast as TV

A long time ago, I was wondering why the computer started so slowly? Why can't I just press the button like a TV? Every time you open a computer, it is a long waiting process. Sometimes you may just open a TXT file, check a number, and shut down the computer. It takes less than five seconds to start the computer.

Recently, when I used the Virtual Machine Software VPC, I found a function to save the PC status. That is to say, when the system is turned on, the last status is automatically restored quickly without restarting. So I thought, we usually use almost no hardware changes in the PC, why not make this function out? Big deal, startup failure, re-check again