Hello, I've been having this problem for a while now, but it went away for a few days so I assumed the matter was resolved until it just started popping up again a few minutes ago, and it's now doing so every 20-30 seconds.
It's a small blue square in the center of the screen that pops up and it says "OSD Lock Out", followed by "Exit". I've read all the help articles about it and most of them say to hold down the power button or unplug my monitor, but unplugging the monitor doesn't fix it and the power button actually triggers it to reappear. None of the other keys on my monitor make it go away (they actually don't even work as far as I can tell), and they actually don't do anything so I'm guessing that a faulty monitor may be part of the problem. Even my power key doesn't do anything except made the OSD menu popup, but I can't interact with it in any way.
If anybody could clarify just what triggers the OSD Lockout screen and how I can make it stop popping up every few seconds, that'd be great, because it honestly seems random. I went like three days without seeing it and now it's popping up constantly with no rhyme or reason as far as I can tell. Thanks.
P.S: I just checked my monitor cable (the blue on with the two pins holding it in place), and one of the pins is apparently cut off so it won't screw in...Not sure if that's important or not, but there it is).