Thank goodness for this forum and thread. I installed 14942 twice this morning and it failed after the third reboot both times at 76% "Working on Updates" . Each time it reverbed back to 14936. I ran through this string and found a number of thread discussing Malwarebytes so I removed it and re-ran Windows Update. It worked as designed. I reinstalled Malwarebytes V220.127.116.113 Licensed Edition and as it was trying to update its database, Win10 crashed. It has been removed from this installation and I reported the issue to MS. This was the first crash and I have installed every Insider Build going back to the start of the program.
Thanks much to all that posted the problem in this thread.
I'm going to go to HP to see if there are any firmware/BIOS updates. Then I think I may do a clean install, but since Microsoft is monitoring my machine, I may wait on the clean install.