In upgrading from Windows 7 to 10 all seemed to be working but then the desktop manager starting looping flashing as it tries to install the tiles . Cannot get out of the loop. Have tried restarting but the process repeats - after a number of hours the flashes became less frequent but continue to be about 2 flashes then a pause until it restarts multiple quick flashes . It is reporting windows problems and trying to find a fix I presume but after a week of flashes it continues to be stuck. Can get to the task manager but cannot get into safe mode. any suggestions?