Virtualbox installation win10 appears flower screen how to do?

I want to experience the latest version of Win10 but don't want to install it in a physical machine. The virtual machine is the best choice. VirtualBox is one of the most popular virtual machine software. Recently, Windows 10 preview version 10565 was installed in Virtual. After the start menu was opened, the screen appeared, and the dynamic tile could not be rendered correctly. As shown below:

occurs because of this problem may be live tile rendering of the virtual machine 2D Video, 3D acceleration is not compatible. Then you can try to close VirtualBox related options to solve:

off the virtual machine, open the Settings (virtual machine properties), and then in the "Display" is set, the "open 3D acceleration" and "open 2D Video acceleration "disable, as shown below: