It was a mandatory update to Win 10 from Microsoft of my perfectly performing Windows 7.
When I boot up, the desktop icons appear and about 3 seconds later, the screen refreshes, and then desktop again. Over and over and over and over -- unending.
The refresh period is too short to open any apps.
CANNOT START IN SAFE MODE!!! Does not recognize F8 or Shift-F8.
Cannot recover to a previous version nor delete last update.
Computer is useless.
Called Microsoft Help; on hold for 15 minutes, then told to press "1" and they would call back. It has now been 2 hours and no call-back.
Any suggestions.
This Win 10 is a disaster.