Ubuntu – Trying to install Ubuntu on Dell XPS 15 (9570)

I have been trying to install Ubuntu on my new laptop:

• Dell XPS 15 (9570)
• Windows 10 Home 64bit English
• 8th Generation Intel(R) Core(TM) i7-8750H Processor (9M Cache, up to 4.1 GHz, 6 cores)
• 16GB, 2x8GB, DDR4, 2666MHz
• 256GB M.2 2280 PCIe Solid State Drive
• NVIDIA(R) GeForce(R) GTX 1050Ti with 4GB GDDR5

I began by trying to install Ubuntu 18.04 LTS using an 8GB USB drive. The first issue I ran into was getting frozen on the bootup screen on the fourth dot. After a couple tries, I plugged in my monitor (through HDMI) and it stopped getting stuck all of a sudden.

Next, I tried to go through the installation and when I clicked on restart now, my computer froze and I had to shut it down manually and start it back up again. At this point I got to the login screen and logged in but after entering my password it got stuck on a purple screen with my mouse pointer (which was frozen). I was able to get into a shell at this point (with ctrl+alt+f4) and attempted to run sudo apt-get install nvidia-390 but this froze when it reached building initial module for 4.15.0-22-generic and upon reboot I had to run sudo dpkg --remove -a.

I was unable to work around this so I attempted to install Ubuntu 16.04 which I could only do by adding acpi=off to the boot configuration (which by the way, I had a lot of trouble getting to since GRUB usually flashed in and then immediately disappeared and only occasionally would it stick around long enough for me to use). But when I try to boot up now, I never reach the screen with the five dots and instead immediately get stuck on a purple screen (with no mouse pointer).

I reinstalled Ubuntu 18.04 and am back to being stuck on the log-in screen.

What should I do?