I have been building computers with agp cards for a while and know what I am doing. Recently I built my first computer with a pci E card, and the on board video was automatically shut dow and the pci e card started working. I cannot use the onboard video while my pci e card is hooked in. when i fired up the computer with the pci e card it worked but everything is crazy glitchy. I installed windows and its even glitch in there. I installed the most up to date drivers for the card and it was less glitchy but still horrible. All the best games are running at full speed as they should’ however its so glitchy youd rather kill your self then try playing the games. Either the card I bought was just broken from the start, or this being my first time dealing with one I have missed a crucial step. If anyone can help I thank you.