Hack running on Mavericks, won't shut down.

Gigabyte Z68X UD4 B3

i7 2600K

Triple boot :

10.6

10.9.5

Win 8.1

In Mavericks (10.9.5) if I restart, it does so. If I click shutdown, it closes down the OS, all screens go blacks, and then the computer stays on. I have no open programs.

I have to hold the power button on the tower to have it actually shutdown.

Snow Leopard and my Win 8.1 install all shutdown and restart fine, no problems there.

Any ideas?

submitted by TheDrinkerOfInfinity

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What is missing? Please comment to help!

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