I have just bought 2 2gb jetson nanos nad both of them are working fine however as soon as i connect the csi camera the display goes dark (not power off just the display is no longer detected) and when I remove the csi ribbon cable it comes back automatically.
I am using 5 volt 3 amp supply which comes with RPI and is standered for jetson nano 2 gb.
Thanks for the tip, the problem was that i mount the csi camera on a metal stand and the screw holes had terminals in then which were shorted, once I secured that everything was working fine.