Thanks Wolfie, my thoughts as well. The X99 had a very short run.
Finally have a dump file to share, probably due to all my other changes etc. rather than the original issue. See what folks think.
The symptoms again: Now shuts down like clockwork, in reviewing the event viewer shuts down every 14 to 15 minutes. Will shut down when in bios also when booting to a USB--also every 15 minutes
Sometime when loading certain apps will shut down sooner. RealTemp cased a BSOD 9 and the dump file. Follow-up loads of real temp loaded fine no BSOD.
Is it the SSD or the PSU?
Next I am trading out my old 750 for the current 850 PSU and see what happens. If it still re-boots will try a fresh install on my other SSD.
I tried resetting Windows but wouldn't stay up the 20 minutes needed.