Not connected to the PC

Hi everyone,

I had to shut of our GCMS QP2010 ultra for maintenance. When I rebooted the system it did not want to reconnenct to the computer. When i start the MS real time analyzer i get the error: "GC communication hardware not connected". I rebooted the computer, MS and GC but nothing seems to restore the connection.

The MS is connected to the PC with an USB connection. I have changed nothing in the settings.