OK the only problem that i think might be causing you the problem is your onboard video you need to disable it because even if you install a video card the onboard will always act as the defult display when you try to run a application so you need to go into system device and disable it
OK the only problem that i think might be causing you the problem is your onboard video you need to disable it because even if you install a video card the onboard will always act as the defult display when you try to run a application so you need to go into system device and disable it