640x480

It sounds confusing in the title but everytime I try to switch to a resolution preset other than 1920x1080 @75hz my screen automatically converts to 640x480 75hz. It is the exact problem in this link...

So here is my rig: MSI GTX 1060 6GB i5-4460 3.1Ghz 16GB RAM DDR3 MB: ASUS B85M-G SSD AND HARD DRIVE 1TB/120GB I am streaming and gaming in heavy load situations...i need the BEST cpu my motherboard can support,if its doesnt have a big difference should i upgrade my mb? i dont wanna waste more...