Making Sense of PC Beep Code Descriptions

Part of the Build Your Own PC Do-It-Yourself For Dummies Cheat Sheet

If your computer starts beeping, don’t worry; your PC is trying to tell you something. Here’s a guide to those PC beeps and what they mean:

Number of Beeps What Your PC is Telling You
Single short beep Normal boot
Repeating short beeps Problem with power supply or motherboard
Repeating long beeps Problem with RAM modules
One long, two short beeps Problem with video card
No beep Problem with power supply, CPU installation, or PC speaker
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