Here is the story.
I bought a Rasperry Pi Zero W. Set it up and everything was great. I could connect it via a Mini-HDMI to HDMI to my TV with no issues. Running of 2.4A USB power.
However, my project is a bartop arcade. With that I have an old VGA Monitor. I bought a Mini-HDMI to VGA adapter and initial tests after some adjustments to the config.txt were it was working. I got a picture and I could use.
Further along in the project I have now got the buttons, joystick etc.
Whilst the arcade isn't finished I thought I would connect it all in a dry run and enjoy. 3 hours later I am angry as no display at all.
Tried in my VGA and switched back to HDMI and nothing working. I am getting a green flashing light on the Pi and I was able to access it over the wifi network so it was powered on but no display. Here is what I have tried:
1) Un-commenting every conceivable combiniation of the following from the config.txt:
config_hdmi_boost=4 (tried increasing this number also)
After each variation I tried connecting to HDMI and VGA to no avail
2) Tried re-flashing the SD card - Still nothing and now I can't access it over network anymore as can't access via wifi
3)Tried different HDMI cables and different monitors/tvs
4) Tried different power supplies.
Nothing is working. Is 2.4A enough or do I go higher as I read that HDMI can draw more power, but it was working previously. The only thing I did tonight that was different was connect the buttons (which are LED) to the encoder, to the Pi via a USB HUB. Is there any chance in doing this it has damaged the Pi or HDMI port?
Any help would be greatly appreciated.