Install Windows 7 virtual machine in VirtualBox

First of all, you need to download a Windows 7 Installer with Iso, and Bootable formats. If you have a copyright CD Key, you can download directly from a website of Microsoft:

If you have no copyright CD Key, let's seek a site to be able to download a Windows7 Iso installer, for instance, the following website:

OK, I have a Windows 7 installer with Iso format here:

First, you need to open the VirtualBox, select New to create a new virtual machine.

Enter the name of virtual machine, herein called "Windows7" by me

Choose the number of RAMs to be provided to the virtual machine.

Next, create a virtual hard disk for your virtual machine.

Select the position where your virtual disk file will be created and designate the size of your virtual disk.

A Windows 7 virtual machine is created and you can see it on the VirtualBox Manager window. It is noted that your virtual machine just created is not installed operating system, therefore, you need to install an operating system for it.

In the above step, you have just declared a virtual machine on the VirtualBox. Now, you need to install an operating system for it.

Press "Start":

The VirtualBox will ask you where the ISO file downloaded by you in the previous step is.

OK, at this time, the operating system starts being installed. If you are familiar with the installation of windows operating system, this is very simple.

Enter password and hint. Your hinted information helps you remember the password if you forget it in the future.

Select time and time zone:

OK Hệ điều hành đã cài đặt xong!

In the above step, you have installed a virtual machine successfully. In fact, you need copy & paste the files between the virtual machine and your computer, therefore, you need to install additional software.