Issue with shutdown using task scheduler

I have several HP laptops running Windows 7 Professional that we would like to automatically shut down every evening.  In the past with our desktops, we have always used task scheduler to run a task using the "shutdown -s" command and then schedule the time and days we want the shutdown to happen.  It has worked flawlessly.  With these laptops they seem to shutdown at the end of the day, but then the next morning they are all back on again.  We have turned off "wake on LAN" in the BIOS but they still seem to be turned on the next morning.  We have turned off the wireless on the machines and they are all hard wired through our Ethernet network because we don't want to add extra clients to our wireless network traffic and the Ethernet ports were available below each machine on our computer tables.  Any suggestions on what we are missing?  Any help is greatly appreciated!
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David SankovskySenior SysAdminCommented:
Seems like a foolish question but did you make sure that you didn't enter the -r flag?
Vikas BhatExperienced IT Infrastructure Services/operations ManagerCommented:
can you share the screenshots of task scheduler on laptops. Also, have your checked event viewer for any clues?
dimbrogno2010Author Commented:
I have attached seven jpg files that show screen captures of all the properties of the task we have set up.  I looked in the event viewer of the computer and did not see anything out of the ordinary that would cause the computers to restart or for the task not to run.Task-Scheduler-1.jpgTask-Scheduler-2.jpgTask-Scheduler-3.jpgTask-Scheduler-4.jpgTask-Scheduler-5.jpgTask-Scheduler-6.jpgTask-Scheduler-7.jpg
dimbrogno2010Author Commented:
We found out that there was a place in BIOS that "wake on LAN" was still enabled even though we thought it had been disabled.  We disabled the "wake on LAN" feature and now the laptops are shutting down fine.  Thanks for your comments and suggestions.

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dimbrogno2010Author Commented:
I found the solution to the issue myself but the others did give worthwhile suggestions and comments
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Windows 7

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