Auto adjustment in progress popping up and

change the frequency from device manager

Try turning down the brightness on the monitor, sometimes this will fix the issue, if not the problem is in the inverter board and needs a professional to assess it further.

happened once to me, (I have this exact monitor), heres what i did that fixed it:

Unplug all cables from monitor, leave it unplugged for a few mins.

Replug cables in starting with first the power then let it come up,
then plug in the VGA cables, and see if that fixes it. If not use the buttons on the front to switch input channels and maybe you can get it that way.

Might be a loose connection, a bad cable, or a bad video card. I'd try the monitor on a different computer--even a laptop. Should give you an answer as to what's wrong. With the laptop, reboot it with the video cable attached.

adjust the monitor settings...

Something seems to be triggering it to restart, these are some of the things you can try. Make sure your video cable and power cord are secure on both ends. If you have video card make sure it is secure in its socket. Try plugging the power cord into a different outlet. Try it on another computer if possible. If you find nothing with these ideas I would send it back if it is under warranty the power supply seems to be dropping out.

Go to menu on the bottom of your monitor. Select "image control" once there click auto adjustment. That should change it. Let me know.:)

Good morning! Auto adjustment occurs when resolution or refresh rate of the display changes. Check your display setings in OS. Set them properly according to product operations manual. Update your display adapters driver. Also check your VGA card or motherboard display port & try using a different cable. try pluging the monitor to a different computer or plug in a different monitor with your motherboard or VGA cards display port. best regards

Try putting pressure on the monitor near the buttons. There might be a short or some type of stress pressing the buttons.

Have you tried adjusting the resolution to the prefered resolution, than shutting it down properly.

(Not pressing off button, or if laptop closing screen,

Contact me if this does not work,
Regards,
Asitomani