Once you get the ISO image file, you will need a way to burn it to a CD. You may already have a CD burning application such as Nero, if you do not have any CD burning application, check this simple tool (ImgBurn) here : Download ImgBurn
After download and installation, the ImgBurn application looks like :
Choose "Write image file to disc" option in ImgBurn main window, then follow the wizard, find the downloaded ISO image file in step one, start burning and wait for it is done.
Step three: Booting from the Windows Recovery CD
Now that you have created your Windows Recovery CD, test it to make sure that it will work in the event you need it one day. To do so, restart your computer with the CD in the drive. As the system reboots, follow the instructions on the screen to make your computer boot from the CD, you will see the following screens during the booting time:
Click "Repair your computer" when you see this image appears on your screen, you will enter the "System Recovery Options" window, now you can repair your computer with those tools.