NVIDIA driver is not loaded. Ubuntu 18.10

I have a desktop running Ubuntu 18.04.5 LTS (with Win10 dual boot)
uname -r = 5.4.0-48-generic
I have two TITAN RTX GPUs for Tensorflow
and the motherboard Intel GPU, which I use for display, confirmed by prime-select query = intel

A year ago I followed an AI/ML article and installed the NVIDA drivers using PPA. All worked well, until it didn’t. I think it may be related to apt-get dist-upgrade, but not sure.
I have tried many solutions from this thread, but no luck.

Current status:
lshw -C display shows both TITANs as UNCLAIMED
secure boot is not enabled
apt install nvidia-driver-450 = nvidia-driver-450 is already the newest version (450.51.06-0ubuntu1)
nvidia-settings = ERROR: NVIDIA driver is not loaded

Any advice would be greatly appreciated…

EDIT: Not smart enough to know where to ‘hover the mouse’ to find the upload paper clip…
Here is a link to the bug report: https://drive.google.com/file/d/1EKsrdwnh2YMgjhTVOcHDQhhbe4ZaRGvA/view?usp=sharing