First try rebooting Windows. If this does not bring back the XM generators, then remove the phantom ports. Search the Spooky2 User's Guide for phantom, for instructions how to remove these phantom ports. Once removed, Spooky ought to find the generators again.
But also make sure all your USB connections are secured, the XMs are powered on, the USB hub is powered on (if you use one).
If all the ways don’t work, it is most likely the generator faulty.
For more details, please check the link: