Other
Other things to check.
Power into monitor
Signal cable into monitor
Signal cable into PC
Swap HDMI and VGA cable and see if you get a signal
Remote ( Available on request).
Remote should have solid green light.
If no green light press power button on remote
If still no green light check power cable again ( it will not be the PSU unless both monitors are off)
If flashing green light check signal cable again
If still no signal