What I meant is I didn't restart between uninstalling and reinstalling. There was no prompt.
It's easy to miss the prompt because it's not shown by the installer itself but by Windows, and it may get behind the installer window if it loses focus. Restarting is always compulsory when switching to or from the Basic Display Adapter state.
I was able to install the Emu Driver successfully with the new package.
I'm still having an issue with detecting a second screen unfortunately. My HD 4600 has a DVI port and an unused HDMI port. My monitor is always detected as a generic PnP.
If I follow-through with the process, and just plug in the arcade monitor, I end up with a windows screen that displays in super resolutions, which is difficult to navigate. Mame looks great though, if I can get to it.
As a workaround, would I be able to add a workable resolution (384 x 224, etc.) to the list of super resolutions and have windows default to that outside of mame?
Edit: Would I be able to change the desktop resolution in the
user_modes-super file to 384x224 without messing up any of the actual super resolutions?