Ok, will look into it and see if it's still hidden somewhere 

I'm sorry to say this, but this bios has no support at all for Virtualization. There's no setting related to it on the menu. Maybe if you ask manufacturer to add it... you have luck in the next release.
These are the values your bios can handle.
 0x3: PCI Slot4 IRQ Priority
 0x4: PCI Slot5 IRQ Priority
 0x5: PCI Slot6 IRQ Priority
 0x8: Numlock
 0x33: Azalia
 0x39: SATA Mode
 0x3e: Type :
 0x3f: 32Bit I/O:
 0x40: Block Mode:
 0x41: Transfer Mode:
 0x4e: USB2.0
 0x4f: USB Legacy
 0x50: PCI Latency Timer
 0x58: FACP - C2 Latency Value
 0x59: FACP - C3 Latency Value
 0x5a: FACP - RTC S4 Wakeup
 0x5b: APIC - IO APIC Mode
 0x5c: HPET - HPET Support
 0x63: USB Boot
 0x67: ACPI Selection
 0x74: Quick Boot
 0x75: Quiet Boot
 0x76: Network Boot
 0x7c: Boot Priority
 0x80: UEFI Boot
 0x87: User Access Level
 0x8b: ACPI S1
 0x8c: ACPI S3
 0x8d: Wake on PME
 0x8f: Auto Wake on S5
 0xa4: Set Supervisor Password   [Enter]
 0xa6: Password on Boot:
 0xaa: Unlock HDD Security
 0xb2: Set Master Hdd Password
 0xe7: Cool N' Quiet Support
 0xe8: Multi CORE Support
 0xef: CPU P-State Setting
 0xf0: _OSC Support
 0xf2: External Lan Controller
 0xf3: Special Features
 0xf4:   AHCI supporting as
 0xf6: PX mode
 0xf8: Thermal Fan Control
 0xf9: Light Sensor
 0xfb: HDMI Audio
 0xfc: Wireless Switch Setting
 0xfd: 1394 Controller
 0x113: Internal Lan Controller
 0x114: USB3.0
 0x115: Fusion Utility
 0x116: SATA Port0 Power on
 0x117: SATA Port1 Power on
 0x118: SATA Port2 Power on
 0x119: SATA Port3 Power on
 0x11a: SATA Port4 Power on
 0x11b: SATA Port5 Power on
 0x11c: Force Raid Mode
 0x11d: Discrete GFX Modules
 0x11f: BlueTooth Device
 0x120: Web Camera
 0x121: PXE Boot to INT_LAN
 0x123: Travis Pwr Ctrl
 0x125: In-Chip IR
 0x126: OHCI0
 0x127: OHCI1
 0x128: OHCI2
 0x129: OHCI3
 0x12a: EHCI0
 0x12b: EHCI1
 0x12c: EHCI2
 0x12d: SATA
 0x12e: Primary Video Adaptor
 0x131: Link ASPM
 0x132: Link ASPM
 0x133: Link ASPM
 0x134: Link ASPM
 0x135: Speed Mode
 0x136: Link ASPM
 0x137: Speed Mode
 0x138: Link ASPM
 0x139: Speed Mode
 0x13a: Link ASPM
 0x13b: Speed Mode
 0x13c: Link ASPM
 0x13d: PX Fix Mode
 0x13e: PX Dynamic Mode
 0x13f: Hardware Thermal Control
 0x141: HTC Hysteresis Value
 0x142: Erratum #4
 0x143: Erratum #11
 0x212: D2D Recovery
 0x213: F12 Boot Menu
Thanks for confirming, 
Moved to unlocked /mod