MeeGoPad uses HDMI 1.x not 2.0, only 2.0 can run 4K resolution at 60Hz.
I think you mean the refresh rate at 60Hz and 1080p resolution, but I have 4K screen (3840x2160px).
It has nothing to do with the Windows driver, I have screen artifacts during POST.
I can't change refresh rate or install driver for POST screen!
Again, Windows driver has nothing to do with POST resolution or refresh rate.
There are no artifacts in the BIOS or Boot Menu (my mistake), only during POST screen.
Windwows 10 - Graphics card (Driver Not Installed vs Driver Installed)