It could be happening because your amd driver is disabled. Please do the following -
1) open device manager. (please google "windows device manager" if you don't know what that is)
2) Select Display adapters.
2) There should be two present there. (one intel hd driver and one for amd driver)
4) Enable the amd driver if it is disabled. To do that right click on it and then click on enable.
If it is disabled then try disabling intel driver.
Sorry for such a late response.
I had the same problem for 2 months about AMD Radoen Graphics I was searching and searching for solutions.But no answer i was getting errors from Catalyst Control Center and windows also.I use a lenovo laptop so i have LSC (LenovoSolutionCenter)it told that the driver was disabled but when i checked the device manager it had a hazard sign and it was enabled.Some anwsers from the net said update the driver which didnt work.So go a idea to disable it from device manager and enable again.It was a risk bcuz its a display adapter what if the screen goes off but i had no choice and it worked now eveything works fine.Just do this go to Device manager>Display adapter>click on AMD Radeon HD 7670M>click the disable icon up>select AMD Radeon HD 7670M and enable