So i updated to windows 8.1 and since then, my display screen is smaller than my monitor screen allows it to be and i am unable to change it. I go into the advanced settings to try and click on the "My Digital Flat Panel" but all that pops up is "HydraVision". if it helps, the screen resolution is 1920 x 1080 and my graphics card is and AMD Radeon HD 8670D. Any help is much appreciated, thank you!