I found Marc’s suggestion helpful at first, but the program alone isn’t enough anymore.
Here’s what I do now that works everytime:
1. Close both USBDeview and Tobii EyeX program
2. Disable and re-enable Tobii EyeX Controller in Device Manager
3. Open the Tobii EyeX program
4. Open USBDeview
The red lights on the controller usually turn on before USBDeview is finished loading.
Hope this helps.