Deleted tasks 'return' in Task Scheduler

I am having problems with Windows Task Scheduler. It seems whatever I delete returns after I restart Windows. I deleted a listed task by right-clicking on it and selecting DELETE. The listing disappeared. Fine. The next time I started Windows, there it was again. I not only deleted it from the Scheduled Task window, but also from the Recycling Bin.
Next, I deleted the contents of the View Log window by opening the ADVANCED menu and selecting View Log. In the View Log window, I selected SELECT ALL from the Edit menu. Then clicked Delete. The entire Log contents disappeared, but guess what? The next time I started Windows, back it came.
Finally, I decided to keep Task Scheduler from running, so I went back to the Advanced menu and clicked, "Stop Using Task Scheduler." The task Scheduler icon disappeared from the taskbar on the computer. So, I assumed that stopped it. Don't ask, yes it reappeared later. That's my dilema.
One thing I forgot to mention. The last thing I tried was, right-clicking on a task listing, and selecting "Properties." Then I selected the Task tab, where I found an option to Enable or Disable the task, by checking or unchecking a box. I unchecked the box. The listing showed a red cross over it's icon, meaning it was disabled, right? It came back later, uncrossed. Any suggestions?

 

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