What is the Debug LED?
The Debug LED is a series of small lights or a numeric display on the motherboard that provides real-time error codes or status indicators during the boot process. It can help identify hardware or configuration issues if your system fails to boot correctly.
Understanding the Debug LED Codes
Debug LEDs typically show:
• POST Codes: Numeric or alphanumeric codes corresponding to specific errors or boot stages.
• Component Status Indicators: Lights indicating the status of CPU, GPU, RAM, or storage.
Refer to your motherboard’s manual for a detailed list of Debug LED codes specific to your model. If you need to identify your motherboard manual, you can use a program like NZXT CAM or Speccy to identify your motherboard.
You can find your motherboard's manual on your manufacturer's website. Below are a list of some motherboard manufacturers:
Here’s a list of popular motherboard manufacturers along with links to their official websites:
ASRock - Website: www.asrock.com
ASUS - Website: www.asus.com
EVGA - Website: www.evga.com
Gigabyte - Website: www.gigabyte.com
MSI (Micro-Star International) - Website: www.msi.com
NZXT - Website: www.nzxt.com
How to Use the Debug LED
Step 1: Power On the System
Turn on your PC. Watch the Debug LED as the system goes through the Power-On Self-Test (POST).
Step 2: Observe the LED
• Numeric Codes: If the Debug LED shows a code, cross-reference it with the motherboard manual to identify the issue.
• Status Lights: Some motherboards use separate lights for CPU, DRAM, VGA, and Boot. These will stay lit if there’s an issue with the respective component.
Step 3: Troubleshoot the Issue
1. CPU Error: Ensure the CPU is seated correctly and all power cables are connected.
2. DRAM Error: Verify RAM modules are properly installed and compatible with the motherboard.
3. VGA Error: Check the GPU is securely installed and connected to the power supply.
4. Boot Device Error: Ensure the boot drive is connected and properly configured in BIOS.
Step 4: Reboot After Fixing
After addressing the indicated issue, reboot your system to check if the Debug LED progresses to normal operation.
Still need help?
If you cannot resolve the issue using the Debug LED and manual, contact our support team by clicking the chat icon on the bottom right. We're always happy to assist you with your system!