i have resolution problem

May 15, 2018
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Hi , I have processor A8-8650 Radeon R7 ,fm2+ on Asus MB A68HM-K
and i have resolution problem as i use higher than 1024*768 the monitor starts to be unpluged ( comes and goes) i have tried to sit the screen refresh rate to 60hertz but nothing changed ,what would i do? help plz.