Ever since my computer got set to high contrast mode once, and got turned back again to normal. Then windows started showing black, blue and white where it shouldn't have been. and i have tried turning high contrast mode on and off, and also changing the colors of windows but it is not working. But when i keep my computer on for a long time then it switches back to normal, but when i turn the computer on and off again it comes back to this weird kind of high contrast mode. Have no clue to fix this, please help.