I have AMD A8 8600 CPU/APU and recently purchased an AMD Radeon HD6450 video card I'm trying to install. When I install the card I get no display. Install instructions say to disable any video capabilities on the motherboard. If I do this I'm concerned I will not get any video display on the monitor and possibly still no video from new graphics card. With no video output, I would not be able to resolve anything. If I install the drivers for the new video card first, the driver install searches for existing hardware and finds the Radeon APU. Anyway, trying to figure out how to install the card.