Today my two MCU are not working

[toneblaze]

Hello and thank you for your advice in advance I turn on a computer i dont use often and my two mcu's won't start are do anything.
my operating system is w8. and studio one works

[azslow3]

In general there can be 2 reasons:
1) something is changed outside Sonar. From your second screen shot it is unclear either your MCU is connected to the computer with USB or throw some MIDI interface. In both cases there is normally some way (f.e. hardware LEDs) to check that some communication ongoing
2) configuration is corrupted inside Sonar. Check Control Surface preferences either Input/Output for MackieControl plug-ins are still correct. Next attempt can be removing it from the configuration and reinserting. When still no luck, configuration files can be removed (Sonar will regenerate them).

You can also check either communication is broken in one direction only or completely, remove Control Surface configuration and try to record MIDI track with MCU as an input.

[toneblaze]

Opps it seams to be my usb hub, not enough power for sonar but works ok with studio 1.