Hardware troubleshooting and diagnosis

What you'll learn

1. 1

   Imagine your PC won't turn on. You check the power cable — it's loose! That's hardware troubleshooting: finding and fixing physical problems. 🔧

2. 2

   What's the first thing you should check when a computer won't power on?

3. 3

   Here's a simple flowchart for troubleshooting a no-display issue. Start at the top and work down. 📋

4. 4

   Let's diagnose a PC that boots but has no display. Follow these steps together:

5. 5

   Drag the diagnostic steps into the correct order for a PC that won't boot. 🧩

6. 6

   You hear 3 short beeps from the PC speaker. What does this usually mean?

7. 7

   Which tool is BEST for testing if a power supply unit (PSU) is working?