HDMI-VGA Cable not working between Dell desktop and ASUS VGA monitor.

Using your HDMI-VGA cable between Dell micro desktop and ASUS VGA monitor.
Not working consistently. Getting “NO VGA Signal” message on monitor.

Yesterday if I turned on the monitor, then quickly turned on the PC, it worked fine. If I turned on the PC first, then the monitor it would not work.

Today neither course of action is working.