To do so you need :
1# Usb drive ( 1Gb or higher)
2# 4 GB free disk space
3# Android Lollipop .iso file
dowload from here : https://drive.google.com/file/d/0B4VR**
4# Universal USB installer to creat a bootable usb
download from here : http://www.downloads.techposts.org/download.php?id=5&token=p9xr6d**
5# Open Universal Usb installer than select Android and Browse the Android x86 ISO file and then select the USB Thumb Drive. hit Create Button.
6# Restart your Pc and boot from USB
7# Select Install android to hard disk
note : you will need an empty partition in your hard disk to install android on, if your hard drive isn't partitioned you can do so using MiniTool Partition Wizard Free
8# select the partition you want to install android on (make sure it's not the one where your main system is )
9# Now follow the instructions till the end
Make sure you hit " YES" on this step
and another "YES" here:
Write "2048" on this box:
Than hit "Run android"
Congratulations !!