Before you install Virtualbox or other virtualization software on your OS, make sure that the hardware acceleration settings required by the CPU to support virtualization are currently enabled in your BIOS.

If youre using an Intel processor, then you have to enable VT-x or VT-d from the BIOS of your computer.

To do so, restart your computer and open the BIOS menu. This can usually be done by pressing the delete key, the F1, F10 key or Alt and F4 keys depending on the system.

The BIOS settings for Asus computer users are as follows.

1. Turn ON the System.

2. Press F2 key at startup BIOS Setup.

3. Press the right arrow key to Advanced tab, Select Virtualization Technology and then press the Enter key.

4. Select Enabled and press the Enter key.

5. Press the F10 key and select Yes and press the Enter key to save changes and Reboot into Windows.

If the manufacturer of the computer or CPU you use is different, you can find out how to do this in the BIOS with a quick google search.