Hi I'm trying to run 2008 X64 inside a Vmware 7 VM. The host pc is running Vista X64. The base machine is a Dell Inspiron 530 with 4 Gb of Ram. It has Q9400 processor with Phoenix Award Bios 1.0.18 version dated 02/24/2009. I have the following CPU options in the bios set: Limit CPUID-disabled Execute Disable-enabled Intel VT-enabled Core Multiprocessing-enabled When I try to run the 64 bit machine I get an error from VmWare stating that virtualization must be enabled in bios and transmit execution must be disabled. Unfortunately this option is not in bios and Dell states that they don't have timeline for new bios update. I wanted to know if anyone knows of bios hack that would allow me to disabled Trusted Execution(TXT) bit and copy changes to CMOS so I can run 64 bit machines specifically Hyper-V. I am able to run 32 bit VM's without issue. Any help would be greatly appreciated.