Following instruction 1, about 150-200 tasks and states show up in the list (as it should I suppose), so why those tasks won't show up in Task Scheduler is beyond me.I am also curious about Task Scheduler not showing anything.
Two things you can do.
1.) Open Powershell as Admin and run the following cmdlet at the PS> prompt:
You should be presented with a lengthy list of Tasks and States.
2,) Run Process Explorer (free from Microsoft):
Objective being to get a sense of what all is running and to determine if there is anything that seems suspicious.
Any unrecognized process can be googled for more information about what that process is and what the process (supposedly) does.
There are plenty to go through, but I will do my bets to identify every single task.