DMA Troubleshooting Guide

1. The Board Doesn’t Light Up After Plugging In

Follow these steps in order. Only proceed to the next step if the previous one doesn’t resolve the issue. Stop once the issue is resolved.

1. Check if the protective film on the DMA’s gold fingers has been removed.

2. Shut down the main PC and disconnect the power.

3. Reinstall the DMA or try a different PCIe slot.

2. Blue Screen, Startup Freeze, Mouse Freeze, or PC Freeze After Installing DMA

Follow these steps in order. Stop once the issue is resolved.

1. Update the motherboard BIOS:
2. Go to the official website of your motherboard brand, find your model, and follow their BIOS update instructions using the latest BIOS version.

3. Switch to another available PCIe slot.

4. Reinstall Windows (skip this step if your system contains important files).

5. Insert the DMA into the graphics card slot, and move the graphics card to another slot.
(This method often works but may impact high-end GPU performance.)

Flash different DMA firmware (incompatibility is often the root cause).

3. Error During Speed Test on Second PC or Main PC Crashes When Testing

Usually caused by incorrect BIOS settings on the main PC.

Disable the following BIOS options:

1. Virtualization

2. VT-x / VT-d (Intel) or IOMMU (AMD)

3. TPM and Secure Boot

⚠️ Methods to disable these settings vary by motherboard brand.
We recommend searching Google for specific instructions based on your model.
(Customer support may not always be immediately available.)

4. DMA Speed Test Error or Initialization Failure

Compare your test results with the following known issues and apply the appropriate solution:

Issue A

Analysis: DMA is incompatible with the current motherboard slot.

Solution: Try a different slot or use a different DMA board.

Issue B

Analysis: The motherboard restricts DMA memory access.

Solution:

• Disable virtualization, VT-D/IOMMU, and Secure Boot in BIOS.
• Refer to Section 3 above for BIOS guidance.
• Best compatibility: ASUS and MSI motherboards.

Issue C

Analysis:

• The secondary PC isn’t connecting to the DMA.
• The DMA driver may be missing.
• The DMA may not be powered.

Solution:

1.Confirm the main PC is powered on and the DMA light is on.

• If the light is off, refer to Issue A.
• Check the kill switch is not enabled.
• If still unresolved, contact support.

2. Ensure the Second PC recognizes the DMA USB driver.

• If not, refer to the DMA Installation User Manual.

3. Make sure only one DMA-related software is running at a time.

• DMA does not support multiple simultaneous software connections.

Issue D

Analysis: Windows on the Second PC may be missing essential components.

Solution: Reinstall Windows using an official, unmodified version from Microsoft.

Issue E

Analysis: Possible firmware issue or DMA hardware damage.

Solution:

Power off and reinstall the DMA.

Check the DMA lights:

• If one light stays on and the other blinks, it’s likely a firmware issue.
• Contact the seller for updated firmware.
• If the issue persists after firmware update, contact the seller for further assistance.