For about one and a half years I have been using an NEC-Mitsubishi FP2141SB CRT monitor.
Up until recently, every single time the monitor was set to 60 Hz (During BIOS POST, Windows boot, OpenGL Games, DirectX games before it was patched, or manually) the monitor would display this huge warning about how 60hz is really low and that it should be higher, refer to the manual for how to set it. Now if this were in Windows only, I would have no problem. 60 Hz sucks. But during POST, I can’t see any of the information. During Windows boot, it nearly completely covers the Windows logo. And during games, I can’t see shit! It did have a method to exit it, but it was so annoying to exit it all the time.
I called tech support. They said that that window was by design and that it was impossible to disable.
Well I am happy to report that I DISSABLED IT! This may not work for you, but I reset the monitor to factory defaults, and now that box never comes up! Hope this helps at least one other user of this display.