So I have a Windows XP on my desktop and am using an Acer monitor. All I wanted to do was change the font size of texts that appeared. So I clicked on Display,Settings, Advanced and DPI and changed it to 175%. Found that it was too large and I want to go back to Normal or Large. But I can't move the Window and click on Ok and Apply as it just won't fit into the screen and I can't move it into the top of the screen enough. What do I do?