strange flicker on monitor

jock1092

Honorable
Jan 17, 2013
125
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10,710
hi i was wondering if anyone knows what may be causing a strange static-like pattern on my monitor screen?

i use a dual monitor set-up with a sapphire radeon hd7770 ghz edition, with my monitor as a main display (with the patterns appearing) and my 37" tv for movies and games.

the tv is unaffected and even with the lines on the monitor it still has a readable display.

i first thought it looked like it was the wrong refresh rate as its a 60hz monitor but that is the setting its on.

just wanting rid of the lines as they started to be noticeable after playing the original Empire Earth game and am hoping nothing is damaged (doubt it though as the game is surely to old too have caused this?)

any help would be much appreciated>