Hello!

When i enable virtualization in BIOS, after that Windows 8 pro won't start. Freeze at the windows logo.

My PC:

Gigabyte GA-MA790XT-UD4P (latest BIOS)

AMD Phenom II X4 B50

8 GB RAM

120GB SSD SAMSUNG 840 series

I read, there were some problem with gigabyte motherboard's  USB 3.0 controller, but i haven't got USB 3 port. I can't disable it.

I tried "cold boot" but it is not worked.

What should i do?

Thanks for replies!

AMD Phenom II X4 B50 sound like you use an AMD Athlon X4 and unlocked the L3 Cache to mod it into a Phenom X4. Disable this mod/unlock in the BIOS.

No, it's an Phenom II X2 550 BE, but i unlocked 4 core. But i tried to make back and nothing else changed.

But i find the solution:

1, Downgrade BIOS to version F7

2, Clean re-install Win8 pro

3, Enable Hyper-V in windows

4, Enable Virtualization in BIOS

Now it works, thanks for reply Andre!