monitor screen Skewed, Squashed

Hi, I do not know how it happened. I was doing a norton antivirus scan and let my PC on during the night and when turn the screen on in the morning the screen has kind of shrink into kind of 4;3 ratio, but the screen is skewed or squashed. I have duo monitor, the secondary seems be fine. I really need help thanks. Image: http://ift.tt/1CjNNvw



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