---
title: "Vicon Vanguard troubleshooting"
canonical: "https://help.vicon.com/space/VanguardDoc/261394138/Vicon%20Vanguard%20troubleshooting"
format: markdown
---
> Macro (scroll-landscape)

> Macro (scroll-tablelayout)

| **Issue** | **Symptom** | **Solution** | **Explanation** |
| --- | --- | --- | --- |
| Vicon Markerless system is not tracking. | Vanguard camera images are completely black. | On your PC, check that the NVIDIA display drivers are up to date and if not, download and install the latest updates. | Markerless tracking uses cutting-edge, machine-learning GPU technology, which is only available in recent releases of the GPU drivers. |
| Camera images are dark | Ensure Video Calibration mode is NOT active. | Video Calibration mode lowers the shutter duration for the cameras to clearly see the wand LEDs for a high quality calibration. After you have completed the calibration/set origin process, you must exit Video Calibration mode to produce video images for tracking. |
| Check that the light sync cables are plugged in. | Each IR light is synchronized to the system using an RCA cable that connects the light to the Vicon Lock GPO ports. |
| Check that a GPO program been selected. | The light trigger signal is controlled by the Vicon Lock GPO. See *[Set the brightness of the Vicon IR lights](https://help.vicon.com/space/markerless/261718324/Set+the+brightness+of+the+Vicon+IR+lights)* in *Getting started with your Vicon Markerless system*. |
| Check the status LED on the base of the IR lights, which are green when the lights are receiving power. | If the status LED is not lit, the IR light is not receiving power. Check the cabling to the PoE switch and that power is reaching it. |
| Vanguard camera not calibrating | Wands are identified sporadically in the Vanguard **Cameras** view, calibration progress is slow | Check if a large portion of the sensor area is masked (shown in blue) in the Vanguard **Cameras** view | The image is too bright for calibration. Decrease the **Calibration Shutter Duration** for that camera and re-mask so that only unwanted bright areas are masked. |
| Check that the wand active markers are consistently recognized as centroids (overlaid with a red circle with a crosshair) when in Video Calibration mode | The image may be too dark for calibration. Select **Activate Video Calibration** and place the wand so it is visible to the camera. Increase the **Calibration Shutter Duration** so that the wand active markers are recognized as centroids in the **Cameras** view. |