I'm trying to Install Windows 7 64bit on Virtual Box but keep getting the error "VT-x features locked or unavailable in MSR." After some googling people say that enabling hardware-v in the bios. I'm not sure how to do this, I've got Intel i5 2500k CPU and an Asus p8z68-le motherboard. Do I press a button while my computer is booting or do I install a program that does this?