[NAME]  But did disabling Fast Startup solve the boot problems?
  please advise? msinfo32 shows current BIOS version is 1.3.1; however Windows Update reports installing Dell, Inc. - Firmware - 0.2.16.2. Dell Driver Update browser tool shows 1.3.1 needs to be updated urgent to 2.16.2   Select BIOS | Dell XPS 13 9365 2-in-1 System BIOS to download and install For 1 year plus, I've tried to update unsuccessfully with Dell Support Assist. Past 3 months, Windows boot fails, showing Dell logo on black screen forever; no spinning wheel. Pushing power button shuts it down. Then pushing Power button, it often will successfully boot up. Sometimes removing peripherals is necessary after multiple failed boot up attempts. I've disabled McAfee when installing driver. Out of warranty.  I think Windows Update was an optional update.   Any ideas?
XPS 13 9365 2-in-1, BIOS update fails