Hardware⏱️ 3 min read📅 2026-06-15

How to Fix error code 79 Error – ASUS Rampage IV Extreme Debug error code 79 and 5A

Error code 79 on ASUS Rampage IV Extreme with Windows 10 and Ubuntu 14.03 LTS installed.

Quick Answer: Check for loose connections, update BIOS, and verify hardware compatibility.

📋 Table of Contents

  1. 🔍 Why This Happens
  2. 🔧 Proven Troubleshooting Steps
  3. 💡 Conclusion

The ASUS Rampage IV Extreme desktop computer is experiencing an error code 79 and 5A, which causes it to reboot unexpectedly while displaying a POST screen. This issue affects users who have installed Windows 10 on their system and have recently made changes to the hardware configuration.

This error can be frustrating for users who rely on their computer's performance and stability. In this troubleshooting guide, we will walk through the steps to diagnose and potentially fix the issue with the ASUS Rampage IV Extreme.

🔍 Why This Happens

  • The primary reason for this error is likely due to a conflict between the Intel i7 3930k CPU and the NVIDIA GTX580 GPUs in SLI mode. The recent installation of Ubuntu 14.03 LTS on a separate SSD may have caused a configuration issue that affects the system's stability.
  • Another possible cause could be related to the new power supply unit (PSU) installed, which may not be compatible with the system's power requirements.

🔧 Proven Troubleshooting Steps

BIOS Reset and Power Supply Check

  1. Step 1: Step 1: Reset the BIOS to its default settings using the ASUS ROG USB BIOS Flashback tool. This will ensure that any custom settings are removed and the system's default configuration is restored.
  2. Step 2: Step 2: Verify that the power supply unit (PSU) is compatible with the system's power requirements. Ensure that the PSU is installed correctly and that all cables are securely connected to the motherboard, GPU, and other components.
  3. Step 3: Step 3: Test the system with a different PSU if possible, or try using an external power source to rule out any issues with the existing PSU.

GPU Configuration Check

  1. Step 1: Step 1: Disable SLI mode and test the system with only one GPU. This will help determine if the issue is related to the SLI configuration or a problem with one of the GPUs.
  2. Step 2: Step 2: Try swapping the GPUs in different PCI slots to rule out any issues with the current slot configuration.

💡 Conclusion

To resolve the error code 79 and 5A on the ASUS Rampage IV Extreme, it is recommended to start by resetting the BIOS to its default settings and verifying that the power supply unit (PSU) is compatible with the system's power requirements. If these steps do not resolve the issue, try disabling SLI mode and testing the system with only one GPU. By following these steps, users should be able to identify and potentially fix the underlying cause of the error.

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