I am trying to install OS X with VirtualBox, on my Windows 7 laptop. I see the following error message:
VT-x/AMD-V hardware acceleration has been enabled, but is not operational. Certain guests (e.g. OS/2 and QNX) require this feature. Please ensure that you have enabled VT-x/AMD-V properly in the BIOS of your host computer.
After this message, the boot fails with a critical error.
I am using Lenovo X201 Tablet as the host machine.
What should I check and how can I fix this?