XPS 8920, SA can't be installed AND Premiere gives Nvidia error

Last night, I noticed Adobe Creative Cloud updated Photoshop and Premiere, but when I open Premiere it says my graphic drivers need to be updated.

I've tried everything, even downloading the drivers from the Nvidia site, and the installer always says it failed. I've tried the steps here: https://nvidia.custhelp.com/app/answers/detail/a_id/4223

Next, I thought maybe this is something that SA (SupportAssist) would do, and I noticed it wasn't installed. Trying to install that just hangs during installation (and I should mention in both instances, I also tried running the installer as an Admin (which my user is anyway, but still, I right-click and chose Run as Administrator). Per these forums, I've tried the following URL, but it always hangs during the installing: https://www.dell.com/community/SupportAssist/Installation-of-SupportAssist-does-not-end/m-p/7324216#M88226

Finally, I noticed that just going to search Run, and typing services.msc  popped up a message saying "An Administrator has blocked you from running this app." but I'm the only administrator on this computer. I'm the only user account! I tried many things per the web, and the only thing I found to have fixed this last situation is changing HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA to 0 in Rededit. (Not even changing User Access Control to Never allowed me to run services.msc without getting that "blocked by administrator" message that wouldn't let me proceed.

SO, I know this is all a lot, I'm just frustrated that these problems all just appeared recently after not having any problems for 2 years. I think maybe the most recent Windows update changed things.

My question is... do you think I should just re-image the computer? How can I get SA or Nvidia to even install?