Update March 26 = Based on last reports, the last onsite service to replace the motherboard has fixed the issue.
I purchased XPS15 in February of 2021; and by July I started having a horrible Dell experience. My laptop would not charge unless I had it powered down.  Luckily I had purchased premium support; Had technicians here at the house 3 times;  sent the laptop into Dell at least 3 times...they replaced the original mother board several times, speaker, palm rest (not sure why) and so much more...eventually by October and many trips to Dell it finally stabilized.  October 2021 to now March 2022.  It has started again; I have to turn it off to charge;  then when booting up it goes into rounds of shutdown/boot up/shut down...sometimes 2x sometimes 5 or 6x. I'm not a techie person; I just need a good computer for my personal work.   I don't want to call Dell up; every single time I did, the new Support person had to go through a standard list that would take an hour of solutioning, to get to the same conclusion...Hours were wasted on the phone back then. I can't send my laptop in time and time again; I need it for work. They showed no sensitivity what so ever in the number of times i had to get it to them; reinstall everything from scratch; windows installation problems each time they sent it back to me. Just a terrible experience. I still have premium service, but my hope is someone out there reads this and knows how to fix this, so I can bring it to a regular repair shop to have them do it same day..  I've read many articles about this issue I just don't know if folks have resolved it on their own without Dell's assistance. Extremely frustrated; and so very disappointed here!  I don't play games, or have crazy software installed.  Excel and internet are my biggest uses.  It's definitely nothing I'm doing. It's odd it went fine for a few months; now it's worse than ever. I don't travel; so not banged up. If anyone can provide ideas; even recommendations on where to go (I live in the philadelphia area); i'd appreciate it tremendously.  I can't call Dell and go through what I what through last year.  Multiple and multiple visits here from Tech's and shipping laptop to Dell over and over again, each time losing everything. THANK YOU     
Dell XPS15 won't charge and continuously shuts down/restarts