Monitor flickering with red pixels

I have a fairly new computer set up with two old duel monitors, only one of the monitors is flickering, that is my LG E2050,
it doesn't flicker all the time, only when I am watching videos and that's it, if the video to my other monitor all the red pixels disappear, is there a way to fix this? and should I be worried?



This is my computer http://preview.tinyurl.com/cwz4gr4


also my computer rarely overheats.