Trouble installing Xubuntu 18.04 on brand new Del 17 3000

[MR ZenWiz]

General response to all posts so far:

I reset the boot to UEFI and had no trouble getting back into Windows.

I have not tested other ISOs and I will retest the DVD I was using on
another machine.  That said, this is the same DVD I used to install my
desktop, my (other) laptop and my lady's laptop - last year.

The registered model from the label on the bottom is P35E if that helps.

I will call Dell and see what they say.  My past experience with Dells
is that they usually work with Linux (and they will ship with Linux if
so ordered, but Fry's doesn't carry them or any PCs that way).

Follow-up coming soon - I need to get my car in to the dealer right now...

Thanks!

Mark