Symptom
Analog video on a S-Series 1 3VR appliance appears as a blank black screen or just says "Loading".
First, try rebooting the system. If video comes back after the reboot and get the logs
Check Video Diagnostics. If the device is not visible to the operating system and the channels have red Xs next to them, the video card has failed.
If the device is visible and the channels have green check marks, continue with solution