SA, can't get past loading PC Optimization Tools screen

I know this has been exhausted, but it isn't if I still can't get what used to work a week ago but won't now, SupportAssist. If I tell you that in two days, I've read what I would say is almost literally every article and tried it all, I am being honest with you. Things that you'd never dream of doing I have done. And no, no major changes except as a result of this, like doing a Windows Update. I'm current now. I am stumped! I've removed every file suggested to be removed, including leftover files via Revo. I've uninstalled, rebooted, looked for files that shouldn't be there and deleted them, regedit search and remove, changed settings in Services, just everything.
I cannot get past the splash screen below. PLEASE, help me. I am 100% stumped. Oh, and I renamed the name of the logo in Resources, with and without the .png, and I deleted and reinstalled a million times. And no, I don't have Malwarebytes installed.

Thanks for any ideas you can offer.

Dell Latitude E7440
Windows 10 64x

Stuck here ...