How can I troubleshoot my riser cable?

HAVN GPU with PCIe 5.0 Riser Cable Not Functioning Properly – Troubleshooting Guide

Step 1: Test the GPU Directly on the Motherboard (Elimination Method)

• Please insert your graphics card directly into the PCIe slot on the motherboard, without using a riser cable.

• If the system works normally with the GPU directly connected, it indicates that the GPU is functioning properly, and the issue may lie with the riser cable or other components.

• If the problem persists, please check the GPU itself or other hardware settings.

Step 2: Verify Proper Installation of the Riser Cable

• Ensure both ends of the riser cable are securely connected (motherboard side and GPU side).

• Check that the cable is not excessively bent, pinched, or in contact with any metal objects during installation.

• If you are using a vertical mount, make sure the GPU's weight is not causing the riser cable connector to become loose.

Step 3: Check Power Supply Connections

• Verify that the GPU’s external power connectors (6-pin/8-pin) are properly plugged in.

• A power supply unit with insufficient wattage may also cause startup issues with the GPU.

Step 4: Test Another PCIe Slot

• If your motherboard has multiple PCIe slots, try connecting the riser cable to a different slot to rule out issues with the current PCIe slot.

Step 5: Clean Gold Fingers and Connectors

• Gently clean the GPU’s gold fingers with a clean rubber eraser.

• Ensure that the riser cable’s connectors and motherboard slots are free from dust or oxidation.

Step 6: Check BIOS/UEFI Settings

• Some motherboards require manual PCIe lane configuration (Auto / Gen 4 / Gen 5). It is recommended to set the PCIe slot to a fixed Gen 5 mode for better compatibility.

Additional Recommendation:

If you are using a PCIe Gen 5 graphics card and motherboard, please ensure that your riser cable supports the Gen 5 standard. Otherwise, instability or failure to boot may occur. Some motherboards allow you to downgrade the PCIe slot to Gen 4 via BIOS for improved compatibility.

If the issue persists after completing the steps above, please provide the following information so we can assist further:

1. Motherboard model and BIOS version

2. Graphics card model

3. Power supply wattage and brand

4. Riser cable model and length

5. A detailed description of the issue (e.g., no display, stuttering, crashes)