Ughhhhh.... had this for a while now i havent found a way to fix this it dint bother me at first but i bought alot of games from steam i downloaded them and they dont work and it is annoying because i payed for them and i want to play them!!!!!!. hopefully there is a video below showing what happens unfortuantly there no error reports. This problem isnt isolated to steam i have had it on games from a disc.
I'm sorry but im a bit of a newb at displays and stuff like that. Im using dvi i couldnt find another dvi cable so i used dvi to hdmi i had that threw up the same error i tried it on the other ports and the same error came up. About three months ago this started to happend it was fine before i could play tf2 without lag.