HDMI Monitor says 'Signal out of range"

[Tim Curtis]

These two System Config options have to be ON for a locally attached HDMI display.

- HDMI port
- Local UI display

Revert to a stock /boot/config.txt unless you know with certainty that the manually added lines are needed.

A fresh moOde image boots in headless mode (no attached display) which is the most common configuration.

-Tim