Here is how to force your 64-bit system to talk to the old CQ device.
Follow this protocol precisely to get your Driver CQ DMX512 Stand Alone Device working.
| Error Code | Message | Solution |
| :--- | :--- | :--- |
| Code 10 | Device cannot start | Uninstall the driver, restart, and reinstall using the FTDI or SiLabs generic driver. Also, try a different USB port (preferably USB 2.0, not 3.0). |
| Code 31 | Driver is trying to load in a legacy mode | This is a Windows 10 security feature. Use the Signed FTDI driver v2.12.28 or later. Avoid "ghost" drivers from unknown websites. |
| Code 52 | Unsigned driver | Disable driver signature enforcement (Step 3 above) or use Windows 10 Test Mode (bcdedit /set testsigning on from an admin command prompt). |
| No connection | Software sees COM port but no output | The CQ device may require a specific DMX terminator (120-ohm resistor) on the last fixture. Also, verify your lighting software's "Output" tab is active, not just "Input." |
Don't install anything yet. Plug in the device. Open Device Manager (Right-click Start button > Device Manager).
For some older CQ clones using unsigned drivers, you may need to temporarily disable signature enforcement: