Visual roadmap

How a computer starts (boot) - step by step

Think of booting like a relay race. Each part hands control to the next part until you get a usable system. Click a stage below to learn it with visuals and simple examples.

Hardware Firmware (BIOS/UEFI) Boot Loader Kernel Operating System You (apps + login)

Start here

🖥️

Operating System Basics

What an OS is and what it does

➡️

Firmware

🧠

BIOS / UEFI

First code that runs after power-on

➡️

Security

🔒

TPM

Trust chip that helps protect keys

➡️

Loader

🚀

Boot Loader

Chooses OS and loads the kernel

➡️

Core

⚙️

Kernel

Controls CPU, memory, devices, processes

Clickable mini-diagram

Tap a box to see what it means

⚡ Power On

Electricity + CPU reset

🧠 BIOS/UEFI

Firmware starts first

🚀 Boot Loader

Loads the kernel

⚙️ Kernel

Core control

🖥️ OS

Usable computer

😊 You

Apps and work

Tip: this site is built so you can click, hover, and learn in small steps.

Learning path

Start with OS Basics
Then follow the boot order: BIOS/UEFI → TPM → Boot Loader → Kernel
Finish with Windows Boot + quiz

Beginner rule

Every hard idea has 3 parts

Text: short and simple explanation
Visual: diagram you can click
Example: a real world analogy

Quick analogy

Booting is like opening a shop

⚡ Power: lights turn on
🧠 Firmware: checks locks + tools
🚀 Boot loader: chooses today’s plan
⚙️ Kernel: manager gives tasks
🖥️ OS: staff + systems are running