If you are seeing a blue screen this generally indicates that your video cable came loose. Check that the cable is secure on both ends. If the issue remains try power cycling your camera as it's possible that the signal has become corrupted from the camera.
The Cause of a Blue Screen
A blue screen is caused by a loss of video signal. It's typically caused by a loose camera connection.

Written by Brad Hughes
Updated over a week ago
Updated over a week ago