I bought a 2nd hand i5 3570 lga 1155, installed new windows 10 after that, i put my gpu, installed the drivers but when i connect thru the hdmi or port, it stay on black screen with _ like that on top. Before i changed to i5, the gpu is working on my old mobo and processor, i even played nickelodeon kart racing. What is the problem is it the way i installed it or gpu is dead, or something is wrong with bios not being updated or etc? I dont know how to put pictures here so i cant provide. Sorry.