After working in my new IT department for the last six months, I've been encouraging the install of Dell SupportAssist on our Windows 10 machines, to ensure that the drivers are regularly updated and the systems monitored.

However, over the summer, we had a user who was getting very frequent blue screening.  Dell provided warranty support and replaced the logic board.  But the system continued to blue screen.  After wiping the system repeatedly, we finally started making the connection to the blue screen and Dell Support Assist.

The issue is now 100% repeatable.  When the system is running Windows 10 1803 or older, Dell Support Assist runs normally, no blue screening.  When the system is upgraded to Windows 10 1809 or 1903, the blue screening occurs within minutes of boot and the machine is virtually unusable, except for a few minutes at a time.  

However, this only occurs on certain models of Dells.  We have probably 50 computers with Dell Support Assist installed, fully updated to Windows 10 1903 and we've seen this same behavior on about four of them.  One is an XPS, another is an Optiplex 7040, and the rest I can't recall off the top of my head.  We simply uninstall Dell Support Assist and blue screening stops and computer operates normally.

I explained all of this to Dell and they wanted to replace the logic board again.  They really need to focus on their application instead of throwing parts at a computer.