I have Windows 10 Pro and Intel Core i52467M CPU. When I installed Docker, I have also updated Virtualbox to 5.0.26.VT-x/AMD-V hardware acceleration is not available on your system. Your 64-bit guest will fail to detect a 64-bit CPU and will not be able to boot.
The Docker installation program required a restart of Windows to enable virtualization.
Do you have any idea of what happened?