display not staying on whilst in usb mode

[jnr49]

hi im just wondering after i plug in the box and display and then plug in computer so i can setup the settings and display, it shows nothing.
the intro comes up for a second then goes away them the trip daily counter comes on for a few seconds and turns off, then it goes black screen.
is there a way it will show me the display i want to use in the car, for example i want to use user 2 setup on display and i put in all the topics i want for user 2 like boost oil temp and pressure etc, then i want to see it on the screen to double check if i like that design but it will not display
any info would be good
thanks

[ArT]

You need to have ignition switch in middle position to wake up UTCOMP (it has to be +12V on pin A23)

[jnr49]

cheers thanks for that info very helpful.