I did these things either of which got rid of this annoyance.
Step 1- Block internet access with firewall for c:\windows10upgrade\Windows10UpgraderApp.exe
Step 2- Go to that directory and to that file right click on it go to Properties- Security- Advanced and set all of the users to block even system
Step 3- go to c:\ and right click on windows10upgrade folder and follow instructions in step 2
Step 4- set the windows10upgrade folder to read only.
That solved my dilemma as three days in a row i got home to a BSOD and it reverted back to pre-update over and over.