Use Downloads | Seagate
DOS download burned to CD with Windows Image Burner.
Boot it to run the extended test. it is very easy to use. Back up your files first.
Afterwards if you want you can use the wiping utility on Seatools to Quick Wipe the HD, then follow these steps to get a perfect Clean Reinstall - Factory OEM Windows 7
In your case once its all set up you can use DiscWizard | Seagate
which is a free version of the premium Acronis backup imaging program to back up your Windows 7 image externally, even clone it to a new HD if needed. The Manual is on the downloads page and easy to understand and use. This is a free $100 value so I'd use it.