Also, it's a little more advanced but is it "scheduled"? (look in the Windows Scheduler.)
The calculator on my wife's desktop keeps launching, sometimes as many as 10-15 times.
I have run McAfee, Avast, Malwarebytes, Spybot and still it comes back.
There's Norton, Kaspersky and other antivirus systems.
The tools I noted such as AUTORUNS is not a repair tool. It only lets me see what it could be. I would have to check each area out.
--> I sometimes forget that folk may not search for prior answers too. EXAMPLE:
Cameras that make great holiday gifts
Let them start the new year with a step up in photo and video quality from a phone.