I have Presonus Ceres 3.5.Worked very well until now.I am using Windows 10-system is up to date.All driver are up to date.Loudspeaker are recongnized by the laptop.Status is "Connect'.Blue pilot light on loudspeakers is on.Red pilot light is on(power).No sound is comming out of loudspeakers.Try to add/remove couple of times loudspeakers( by software meaning)Fuse is OK...