1.5. Start-Up

When you turn the computer on, the first thing it does is to load the operating system. Loading means it copies the contents of the operating system files from the hard drive to memory.

When the operating system is loaded, the processor starts running it. You see your desktop, icons, etc. on the display, and can start using the computer.

Next: 1.6. Operating System

1.4. Mainboard Components

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