If you get the “CompareExchange128” error – a CPU related error – when trying to install Windows 10 with VirtualBox, Dirk Strauss has the solution for you:
- shut down the vm
- open a cmd prompt and point it to the installation directory of your VirtualBox (most likely C:\Program Files\Oracle\VirtualBox)
- then type “vboxmanage setextradata [vmname] VBoxInternal/CPUM/CMPXCHG16B 1”
- don´t forget to replace [vmname] with the name of your virtual machine (I had some trouble with blank spaces, so you might wanna rename your VM for a second)
- restart the vm
- install Windows 10