I just tried installing a new graphics card and when I turn it on, the computer beeps and the monitor can't find a connection. I have onboard graphics and I disabled the drivers. I have tried both HDMI and DVI connections and the monitor can't connect. The graphics card requires 400 watts and I just put a 600 watt psu. I took out the new graphics card and now every thing is ok. I checked the onboard drivers and it says that it is disabled. The weird thing is the wallpaper looks exactly as sharp as always. Do you think I should uninstall the drivers? Any help you can provide would be greatly appreciated!