DriveImage XML

Free for personal use, DriveImage XML is a lightweight alternative to the more bulky imaging competition. Backup is as easy as choosing a source drive, a destination, and (optionally) setting your compression level.

Restoration is just as simple, and the only significant extra is an option to copy directly from one drive to another.

There are some complications elsewhere. Click "Task Scheduler", for instance, and you'll get instructions on how to manually set up Windows Task Scheduler to run your backups. But if you need just a basic drive imaging tool then give DriveImage XML a try.