Graphics and video problems

Good people, help me don’t know what to do ?? in general, my story is short, one day, including the computer, I noticed that the colors became somehow pale without a glow office around the edges, I didn’t find anything on the Internet, well, I think x, I’ll put up with it, but in games play well ... everything flickers the shadows of the texture well, not straight all the right corners of the buildings, the markings on the road seem to be moving, I take the example of GTA 5 .. though the textures are very high, they are still smeared, what for nah .. I did everything from 100 driver installations before flashing Bios ... can anyone help or have heard or had such a problem Here are the pieces of iron: Fx 6300 geforce gtx 750 2gb NOT TI ... Mother Gygabite 970a ds3p block 500w RAM 8 by 2gb 1333ghz .......... .........