You need to go to the Control Panel Programs and un-install the CCC package there. Do not go to the Device Mgr this will cause more problems.
If you are wanting the system to do a Dual Graphic with the iintegrated then you would attach the monitor to the onboard port, if not then leave it where it is at. You will have to open up the CCC and enable/disable Dual graphics.
I would run this process first (the link below) and then try a fresh install after.
AMD A10-5800K, XFX 7850 Ultra OC Edition 975MHz 1gb, 16GB RAM, Win 8.1 Pro 64 bit, MSI 7778 motherboard, 500W PSU, HP P7-1235, CCC 13.9 WHQL