"HDMI no signal" from my touch screen Monitor

I was having problems with my one finity and was told to flash the sd card in the controller. It seemed to go well and the flash program said operation successful.
I reinstalled the sd card the correct way with the lettering down and booted the system and I get HDMI no signal
I have exhausted ever thing that pertains to the trouble shooting manual with no luck and I have only a choice of VGA or HDMI to pick from my monitor settings
There are no other choices on the monitor
I have connected , dis connected several times trying different things to no avail .Up until the sd card flash I have had no problems at all with the monitor
Any thoughts I am stumped

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I have tried everything that is listed . The fact being I had no problem until the sd was flashed now I have no HDMI signal the screen comes up blue with that message. Maybe reflash the SD??

The list states to reflash the sd

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I formatted the SD and re flashed
This time it took way longer to flash after formatting and everything worked out
Not formatting first I think was the issue
Everything up and running
Thanks for the info

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