Windows 7 makes it easy to create a System Recovery Disc if you already have Windows 7 installed and running.
Step one: Click Start > All Programs > Maintenance > Create a System Repair Disc
Step two: Insert a blank CD or DVD into your disc drive.
That’s it! It only needs to write about 140- to 160-megabytes to the disc, depending on whether your OS is 64-bit or 32-bit, and that should only take a minute. If you do not have a CD/DVD-R drive to create a recovery disc with, you can alternatively download the ISO image of the Windows 7 System Recovery Disc and use it to make a bootable USB flash drive.