When you try to create or import a 64-bit host VM in your Virtual Infrastructure you may receive an error in the VI client along the lines of
‘Attempting to load an x64 operating system, however this CPU is not compatible with x64 mode’
If you have a HP Proliant server that has processors that are 64-bit compatible then it is likely that you just need to enable the Intel VT feature in the BIOS.
To enable the Intel VT feature in the BIOS
Restart the HP Proliant server and press F9
Select ‘Advanced Options’
Select ‘Processor Options’
Select ‘Intel Virtualization Technology’
Select ‘Enabled’ and press the enter key to enable Intel VT
Press the Esc key to exit and then press the F10 key to save the configurations when prompted. The server automatically restarts but I also powered down the server to ensure a cold boot to confirm that the Intel VT option was correctly detected by ESX.