ASUS Mining H370 Motherboard with Nvidia 2080 Ti: Troubleshooting Code 21
If you've successfully set up your ASUS Mining H370 motherboard with Nvidia 2080 Ti graphics cards, but started encountering Code 21 error during system startup, this article will guide you through the troubleshooting process. We'll discuss the possible causes of the issue and provide solutions to help you resolve it.
Understanding Code 21
Code 21 is a PCIe (Peripheral Component Interconnect Express) error that indicates a problem with the communication between the motherboard and the graphics card. This error usually occurs when the system is unable to properly recognize the connected graphics card or when there is a conflict between devices using the same PCIe lane.
Identifying the Problem
First, ensure that the graphics cards are properly seated in their PCIe slots. If the cards are loose or not making proper contact with the motherboard, it could result in Code 21. If the cards are seated properly, try reseating the power connectors to ensure they are securely attached. Additionally, check the PCIe slot for any signs of damage or debris that could interfere with the connection.
Checking for Conflicts
Code 21 can also be caused by conflicts between devices using the same PCIe lane. In the case of the ASUS Mining H370 motherboard, the first and second PCIe slots share the same lane, while the third and fourth slots share another lane. If you have multiple graphics cards installed, ensure that they are not occupying slots that share the same lane. If necessary, rearrange the cards to separate the shared lanes.
Updating Drivers and BIOS
Outdated drivers or BIOS can also cause Code 21. Make sure that your operating system and graphics card drivers are up-to-date. Additionally, check the ASUS website for any available BIOS updates for your motherboard. Flashing the BIOS to the latest version can help resolve compatibility issues and improve overall system stability.
Power Supply Considerations
Insufficient power supply can lead to Code 21 as well. Make sure that your power supply unit (PSU) provides enough wattage and connectors for all your components. Nvidia 2080 Ti graphics cards require a minimum of 650W PSU with two 8-pin PCIe power connectors. If you're using multiple graphics cards, you may need a higher wattage PSU and additional power connectors. Always consult the PSU manufacturer's recommendations for your specific setup.
Additional Troubleshooting Steps
If the above steps do not resolve the Code 21 issue, try the following:
- Reset the BIOS settings to default.
- Disable the integrated graphics in the BIOS settings.
- Try using a different PCIe slot or graphics card.
- Check for any hardware or software conflicts in the Device Manager.
References
- ASUS Support. (n.d.). H370 Mining Master. Retrieved from
- NVIDIA. (n.d.). GeForce RTX 2080 Ti. Retrieved from
- TechPowerUp. (n.d.). PCI Express (PCIe) Lane Allocation Explained. Retrieved from
By following the steps outlined in this article, you should be able to effectively troubleshoot and resolve the Code 21 error on your ASUS Mining H370 motherboard with Nvidia 2080 Ti graphics cards. Remember to always double-check your connections, update your drivers and BIOS, and ensure that your power supply is sufficient for your components.