I have no idea what happened, left my PC on overnight went to work, and now I'm home and I get a UAC Prompt when I try to R.Click Volume Control for Playback Devices...

Was there some stealth...

Issue fixed.
Apparently this (Problems,1,2,4) were being caused by Gigabyte's App Center, I was previously told to reinstall drivers using the APP Center so that it installs drivers for my specific...

...and most items from the taskbar context menu (from programs) mainly File Explorer.

I'm also having the DISM issue like most 1703-ers.

Initially I updated to 1703 from 16xx and programs I was...

Not sure I understand you. If you mean Share folder (Properties > Share tab), then yes I already have that and thats where my issue lies.
do you mean map a network drive?

Windows 10 PC
Windows 10 Tablet

Logged in as Owner(my Microsoft account) on both PC and Tablet

I can access (RWX) files and shared folders from Tablet to PC, but cannot do so from PC to...