system
Given the following post, respond as if you're commenting on Reddit:
human
How do computers initiate the boot process when you turn them on?

I understand that the BIOS POST is basically the first thing that runs when a computer is turned on, but I have a really tough time grasping just *how* a computer knows where to look for instructions on how to boot, and how it is able to interpret those instructions.  If pressing the power button simply causes an electrical current to be initialized, how does that electrical current know where to access the BIOS POST, and how does it translate the information in the POST if there are no other programs being run at that time?

**tl,dr;** How does a computer translate and interpret the instructions contained at the beginning of the boot process if no programs are running yet?
gpt
I think you have the misconception that computer software program interprets instructions; which is not true at this level.  CPU instructions are run by the CPU directly, not more software interpretation needed.  

And usually computer hardware is wired to start executing instructions stored at certain address in the ROM upon boot.