Issue: Virtualbox sometimes shows only 32 bit VM can be created on some Windows 10 AMD processors computer, no 64 bit VM available.
Solution: Following are the steps to enable Virtualbox to be able to create 64 bit VM.
Reboot computer, goes into BIOS:
From Choose BIOS setup->Advanced->System Options (Your menu options may be different, so find your own!), check SVM CPU Virtualization.
Then press F10 to save the change and reboot.
Boot into Windows 10. In windows 10, press windows key, enter "windows feature", to start "Turn Windows Features on or off", you will see a pop up windows, uncheck Hyper-V. It will take a moment to update, once this is done, reboot PC.
After reboot, start Virtualbox, you can create 64 bit VM in Virtualbox