XPS 8940, random lock up

I have been suffering with this lock up condition which started one year after I bought this unit 2021. I have spent 50 plus hours on the phone with dell support with no resolution of the problem. I also sent this computer back to Dell twice and the problem has not changed. I am fed up with this piece of junk. Dell you should be ashamed of yourself for the mess you have created with the XPS computer and you should take the responsabilty for fixing this unit . It is not reliable or useable. Your own web site is full of people who have the same problem with this XPS computer. People  spend lots of money purchasing this unit and they should  not have to reengineer the mess you have created. This unit has random locks up and your bio updates have made it worse. I have many customes that I councel not to buy dell in any way shap or form. Do you really expect the thousands of people who bought this unit to purchase any other of your products? I would hope not.