It's getting really messy and frustrating trying to install backtrack operating system. I have downloaded 3 images. There are: • Backtrack 5 r3 • Backtrack R3 Gnome 32bit • Backtrack R3 Gnome 64bit Am operating with 64 bit windows 8 operating system and i have vmware 7.0.0 workstation installed. What i do is click on new virtual machine specify the location of backtrack image set other things and start the virtual machine. Then i get a menu Backtrack live CD with options from which i chose Backtrack Text- Default boot text mode following a tutorial But am constantly getting the same error message for all 3 images: The CPU has been disabled by the guest operating system. Activity Based Cost Drivers Examples more. You will need to power off or reset virtual machine at this point.