Choosing default graphics card???

Hello, I have an AMD Radeon R5 340X graphics card installed in my Dell Inspiron 3650 desktop pc and I have been trying to figure out how to make the original Intel Xeon E3 graphics card that came with my PC the default card again. I feel like I remember seeing the option to change at some point when I was messing around on my computer but I can't even begin to remember where I think I saw it. Maybe someone can answer my question that got all of this started in the first place. Is there a chance my original graphics card will support DxDiag.txtmiracast or am I way off on what is actually needed for miracast to be enabled?? Thanks for any help in advance. Also I include a copy of my DirectX report i did a couple weeks ago. Thanks

1. Uninstall the driver of the R5 340X
2. Restart your computer, head to the BIOS
3. Find the setting which you disable PCI-E graphics and chose iGPU (or something similar)
4. Save changes and boot
5. Install the graphics drivers of the Intel HD of your Xeon E3.

Right On thanks roasterman.