Hi
Your system image file should copy everything on your drive including the boot sector if it is your C drive.
It should be capable of restoring your drive to exactly the way it was when you made the backup.
If you want free image creation software I recommend EaseUS Todo backup free.
I have used it for years and it has always worked for me it will create a DVD or flash drive that will boot your computer if it is unbootable and restore the drive to exactly the way it was when you create the image.
Free Download EaseUS Backup Software for Windows PC, Workstation and Server.