I have the same problem, i've enabled VT-x on my Optiplex 755 BIOS and in VirtualBox with no luck, but i've noticed that even though i have VT-x enabled on BIOS the "egrep '(vmx|svm)' /proc/cpuinfo" doesn't return a thing.
I have the same problem, i've enabled VT-x on my Optiplex 755 BIOS and in VirtualBox with no luck, but i've noticed that even though i have VT-x enabled on BIOS the "egrep '(vmx|svm)' /proc/cpuinfo" doesn't return a thing.