Angels have the Phone Box
The W10 was an upgraded W7 installation, right? You retained all your programs and data when you upgraded. So, *no*, that is not a clean install, that is an upgrade install. And, an upgrade install is where carryover baggage can sometimes muddy up the waters. A clean install would completely wipe your hard drive and install fresh.
Additionally, a repair install can remedy many problems evident on an upgrade, and it's something we could try once you have everything - and I mean everything - backed up. (I think I mentioned a repair install a page or two ago.)
Monday is a busy day for me. I will check in when I can.