Establishing the root cause is crucial. Verify that the mouse is correctly connected to the PC and that the USB port is operational. Inspect the mouse cable for damage; replace it if necessary. Additionally, ensure that the mouse software is up-to-date; outdated software can cause compatibility issues.

If the issue persists, delve deeper into troubleshooting. Navigate to the mouse’s control panel settings and check the lighting configuration. Reset the lighting settings to default and adjust the brightness levels accordingly. Furthermore, consider updating the mouse firmware if available; new firmware updates often address technical issues and enhance functionality.