Error while installing virtual box due to variations in cpu type.
While installing VM Virtualbox from the official link(new version of VM Virtualbox 6.1) https://www.virtualbox.org/wiki/Downloads we came across with an error for PC's whose CPU Type is 32 bits. But VM Virtualbox 6.1 is for 64 bit type. So for those systems like Windows 7 (32 bit Operating System), the old version of virtual box is helpful, i.e. VirtualBox 5.2.
The link for download Virtual Box is https://www.virtualbox.org/wiki/Download_Old_Builds_5_2