Question #1: What goes on in a computer between turning on the power and seeing a useable screen? I know that all of the components get checked to make sure they are there and that they are operational. I know it runs different checks to ensure proper communication between parts, takes an inventory of what is and isn't there, and gets everything ready to roll. I guess I kind of envision it as a wake-up call. The power supply is the sound that wakes you up, then your senses take over and do an inventory of what is there and what isn't, and then what responds and what doesn't.
If, for instance, you wake up after sleeping on your arm, you may not realize that your hand is still there because you can't feel it, or maybe even move it. So the boot up process would detect this and try again (just like you), until communication is established, or until a fatal error is determined.
Of course, this analogy only works for those who have time to wake up gently. For the rest of us, the alarm jump starts our day.
This is a very non-technical ideal of what a computer does. Do I still need the technical description?
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Just need to add a bit about how the OS is loaded into RAM and then the control of the computer is handed over from BIOS to the OS..
It is fine that it is not a technical description...
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