HP Envy 32" monitor screen randomly shuts off and now won't come back one

So I've had this monitor for about two weeks. Several times it has randomly just went black. The power indicator LED is still showing it's on. My laptop still recognizes that it's connected only when I physically disconnect it from my laptop or unplug the power cord does it disconnect. Right after it happens I try switching to a different input (i had another laptop hooked up to the HDMI) and also pulling up the menu but nothing happens. I try turning it off with the power button or remote, nothing happens. Only after I unplug the power and plug it back in does the display work. ...Until this last time, it went black and no amount of unplugging and plugging back in would get it to work. It still "connects" to my laptop but there's no image, only blackness. I've mainly been using it with my lenovo thinkpad yoga via the onedock pro displayport, but when I try just HDMI with my other laptop I still get nothing. I've also tried unplugging and holding the power button for >1min like another post suggested. Any ideas? I'd hate to have to send it back.

okay so after a long wait with it being unplugged, I tried it and the display worked. i adjusted a few settings -turned off auto input selection and made DP hot plug always on (not sure what that does, but I thought I'd give it a try). Now instead of it randomly going black it randomly shows a green screen of vertical lines, and I have to unplug and wait forever before it works again. any thoughts?

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