I initially registered here to say I was having the exact same problem until it dawned on me what my problem. It may not be the same for you but I forgot about the Chrome program that resides in the System Resources bar at the bottom right in the task bar. I had only been thinking of the Chrome browser and I also closed Google Drive just in case. I hate how Google must use our own PC's to help them do all of the work. I'm about to get rid of Google altogether.