Ive just fixed it to fix the screen , but the blurriness still remains . I fixed it by changing the display settings on the display from Auto to Full . Do you know anyway to fix the blurriness?Did you go to windows and change the display settings? Also sometimes when you change monitor windows dont have in the settings the resolution of your monitor but only lower. While you have your pc running plug out the cable from your gpu (hdmi , displayport or what ever you have) and then connect it again. Also update the drivers of your gpu to the latest.