Trouble Installing Ubuntu 20.04 LTS (Intel RST...)

I'm a long time lurker; first time poster.

I just purchased a Dell Precision 7730 laptop with an Intel Core i7-8850H processor and PC601 NVMe SK hynix 512 GB SSD. The BIOS version is Dell Inc 1.12.1, 11/11/1/2019, which appears to be the most current version, and the BIOS mode is UEFI. The laptop also came with Windows 10 Professional (64-bit) factory installed.

When I first went to install Ubuntu as my new primary OS, Ubuntu brought up a message saying this laptop has Intel's RST, and that it first needs to be disabled. Based on a lot of the feedback from the Ubuntu community, I've made sure the boot menu has the following options enabled or disabled:

*Enable Legacy Option ROMS (unchecked) *Enable Attempt Legacy Boot (unchecked - ghosted) *SATA Operation AHCI (checked) *Secure Boot Enable (unchecked)

Now when I go into the boot menu, though, and select my Ubuntu 20.04 LTS amd64 ISO (on a removable flash drive) created with Rufus, the screen will go black. I've waited for ten minutes, hoping this might be related to a longer boot time experienced going from "Raid On" to "AHCI" but that doesn't appear to be the case. It just appears to freeze. (Note: I can still get into my windows desktop just fine, after I restart the machine.)

So, Is there a way to install Ubuntu 20.04 LTS onto this computer? Is there something I'm missing?

And if it's any help at all, I'm 100% behind nuking Windows 10 and going exclusively to Ubuntu! There is zero information on this disk I want to preserve. It's more important to get this laptop to Ubuntu, permanently.

Thank you all for the help. //Mike