Turbo Tax 2020 Won't Launch

I just installed TT 2020 Standard both form a CD and Download. The when I try to launch to enter my activation code the TT screen remains blank. I have restarted my PC, uninstalled and reinstalled TT many times...same result.

I'm using a new Dell PC Windows 10 Home Ver 10.0.19042 Build 19042 

This is very frustrating Please help.

Thank you