I'm using switchview selfpower kvm switched.
Sorry to say that but 90% of self-powered KVM are big, steaming piles of sh__.
You should try to connect you keryboard/mouse/monitor straight to the computer, as somebody else has said in this thread.
Also, if you have USB peripherals (keyborad/mouse), make sure these are already configured before restarting your computer...
Sorry if this is not very helpful...