Listen to the beep pattern and identify the hardware issue
When a computer fails POST (Power-On Self-Test), the motherboard speaker emits beep codes to indicate the problem. In this lab, you'll hear/see a beep pattern and identify what hardware component is causing the issue.
Note: Beep codes vary by BIOS manufacturer. This lab uses common Award/AMI BIOS patterns.
You've mastered POST beep codes!
| Pattern | Meaning |
|---|---|
| 1 short | Normal POST - system OK |
| 1 long, 2 short | Video/display adapter error |
| 1 long, 3 short | Video memory error |
| Continuous short | Power supply issue |
| 3 long | Keyboard controller error |
| Continuous long | Memory (RAM) not detected |