Tell me more ×  I installed VMWare Server on a 64 bit XP
machine.  After creating a new virtual machine (for XP 64 bit
guest OS) and adding a CD pointing to XP64 setup ISO, VMWare
doesn't let me run the virtual machine:   What gives? (My host
is definitely a 64 bit machine)  share|improve this question add
comment  3 Answers  up vote 13 down vote accepted  You require
Intel-VT or AMD-V support for your processor in order to run
64-bit Guests.  If your processor supports it, it can usually be
enabled through the BIOS. If you can't find the option there,
chances are it may not be available.  Some more reading here
share|improve this answer add comment  That will be it, but also
after you switch the bios setting you will need to power down
the whole PC, I also pulled power to ensure there was nothing
going to the motherboard.  The setting is "locked" into whatever
position its in a long as power is applied regardless of
setting.  share|improve this answer +1. This trips up a lot of
people apparently. I used to