virtualbox.org

Hi,
I've got this error within Virtual Box running under a Win 7 32-bit OS,
VT-x/AMD-V hardware acceleration has been enabled, but is not operational. Your 64-bit guest will fail to detect a 64-bit CPU and will not be able to boot.

Please ensure that you have enabled VT-x/AMD-V properly in the BIOS of your host computer.

when setting up one Vbox using this download
mu_windows_7_and_windows_server_2008_r2_sp1_x86_x64_dvd_619642

Does your CPU/bios support VMX? (hardware virtualization)

Yes, as I did ever run Vbox for having Oracle Linux inside, on the same machine.

Do you have virtualization enabled in the Bios ?