Sleep on Mountain Lion 10.8.3 and GA-Z68X-UD3H-B3 (U1h bios)

[supergab]

Hello,

I have the following system running Mountain Lion 10.8.3

- Intel i7-2600k Unlocked CPU (overclocked to 4.2GHz)
- Gigabyte LGA 1155, GA-Z68X-UD3H-B3 Motherboard r1.3 with U1h bios.
- Gigabyte GeForce GTX 560 TI 1GB Graphic card
- Corsair Vengeance 1600MHz DDR3 Ram - 16GB
- Corsair Carbide 500R
- Corsair H60 Water Cooling Unit
- Corsair 120Go Force3 SATA 3 SSD
- Corsair HX650W ATX power supply

Please find attached a screenshot of Multibeast options.

The only problem for now is that the system does not go to sleep by itself after configuration in System Preferences. What am I missing here?

Many thanks for your time and help.

 

[pbcal]

What optical drive do you have?

 

[supergab]

What optical drive do you have?

I have none.