Prevent a user from shutting down a PC

We have a presentation PC in an auditorium.  Any user can login to to conduct a presentation.  The PC itself is physically locked in a room, but the USB connections are extended to the lectern.  The problem is, sometimes a user will 'shutdown' the PC after the presentation.  IT is then a bit of an exercise to get the room unlocked so that the PC can be physically powered back on.

Ideally we would like to 'password-protect' the function of shutting down on this PC.  This would prevent users from doing it but would still allow the ability to do it when needed (by entering the password.)

Any way to accomplish this, fairly easily?

Windows 7 is what is on the PC.

Thanks
snyperjAsked:
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James GoetheCommented:
You could edit the group policy allowing only admins or specific users from shutting down.
Local computer/non administrator/user/admin templates/start menu/remove and prevent access to shut down.

I can send you the exact instructions if you like.
snyperjAuthor Commented:
Yes! Please- and thank you.
Lee W, MVPTechnology and Business Process AdvisorCommented:
Local things you can do include enable wake on LAN and that would allow you to turn it on over the network.  Or enable an auto-start at a specific time each night.

HypercubeTech told you were to make the adjustment, but you can use the tutorial here as a guide:
http://www.howtogeek.com/howto/7553/remove-shutdown-and-restart-buttons-in-windows-7/
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James GoetheCommented:
If you want to get prompted for an administrator password to shut off the pc, here are the detailed instructions.
http://www.thewindowsclub.com/prevent-users-shutting-down-restarting-windows-computer

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snyperjAuthor Commented:
perfect!
Lee W, MVPTechnology and Business Process AdvisorCommented:
Did you find my link did not provide the instructions you were seeking?

The content looks very similar.
James GoetheCommented:
He needed to be able to prevent the user from shutting down the pc not just hide the buttons. Also have the ability to type a password to shut it down (admin prompt). It was almost identical but one deals with user rights.
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Windows 7

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