How Computer Boots

This is a wonderful document which describes what happens when you switch on the computer.
It takes you right from the hardware level to more abstract kernel level.
I really liked reading it

Motherboard & Chipsets
http://duartes.org/gustavo/blog/post/motherboard-chipsets-memory-map/  

How Computer Boots 

http://duartes.org/gustavo/blog/post/how-computers-boot-up/
 
How Kernel Boots
http://duartes.org/gustavo/blog/post/kernel-boot-process/

By Gustavo Duarte

Tags,
How computers boot , Linux Windows Kernel Initialization , Windows Kernel Init , How kernel works , linux kernel booting , windows boot process