Hello, I'm using dell ispiron 5567 laptop which has dedicated graphics card of AMD radeon R7 M445, At first I used to play games with it but now my laptop is not detecting this graphics card and use the intel 620 graphics. I was re-installing the drivers and it said " hardware not found". I searched the graphics card in device manger but not found there, also I searched it in "dxdiag" but also didn't find here... so what may be the possible reason and what may be the its solution. Thanks in advance
Make sure you are using the Dell Drivers and not those from AMD. Since you have a laptop the video is not an actual discrete card. It is part of the motherboard not stand alone--that's why it has the M designation. It works with the Intel video. It requires Dell customized drivers available here-
If you installed amd drivers that could be causing the problem. Install the Dell driver and see if the builtin card is recognized.