My Host OS is a 64-bit version of Windows 10, VirtualBox categorically refused to display any 64-bit guest OS in the Create Virtual Machine dialog box. This was super annoying because all my ISOs were 64-bit therefore I couldn’t use them until I fixed this problem. Uninstalling and reinstalling VirtualBox made no observable difference so I booted into the BIOS to see what I could find there. I have a HP Pavilion g6 2231tx. As a side note, a few months ago I made another idiotic mistake: I enabled a bunch of BIOS passwords to make myself feel secure but then forgot how to disable them! Thank God I didn’t enable a Supervisor Password or else I would have to replace the system board. That’s seriously the only way to get around that one; resetting the CMOS won’t fix a forgotten Supervisor password. Thankfully, I remembered, the Hard Drive password and the Power-On Password, so after surmounting those obstacles, I removed those passwords and tried to see if there was an