Smax means that you should uninstall the display drivers you currently have installed and replace them with the latest version of the drivers (which, if I understand you correctly, is what you're using AND have got). Sometimes drivers get corrupted and reinstalling them fixes this.
Questions to consider if the driver reinstallation doesn't help:
Do you, by chance, have any programs (especially games) that run with a certain resolution lower than the native resolution of the monitor? I have sometimes had a problem when running programs that change the resolution to what the game wants, but sometimes if the game crashes or I exit the default resolution isn't restored. Does the change happen with particular programs, at startup only, or randomly? How about the flickering (which could be the refresh rate)? Does it seem associated with anything in particular.
Namaste, Peace & Love,
If I have frustrated you, then I must be a student. If I've imparted information or a skill to you, then I must be a teacher. If I've helped you, then I must be a volunteer. If I've touched your life, then I must be happy!
If you had to choose between saving just your family, or saving 10,000 GOOD people (but not your family), what would you choose?