You can backup everything u need with a good backup software. I've tried so many softwares i decided recently to go with genie timeline i downloaded the free and it's working perfectly . You must try it if you need an easy to use software.
You should perform a PC backup as often as you create new files. If you create numerous files a day, it is suggested that you do a backup very often. If you create very few files that require a PC backup, do it monthly.
The cost of the backup PC service depends on which company one is using to backup their PC. CrashPlan+ for example, costs $2.99 per month for a 10Gb storage.
You can purchase backup software for your PC online or in a brick and mortar store. There are several sites that sale the software for your PC.
Complete PC Backup
Complete PC Backup
Backup Files Wizard enables the user to restore individual files as needed and with Complete PC you can restore the entire system.
They have recently changed the name to "PC BackUp" and the current version is 8.0 (for Vista, XP and 2000)
Carbonite Online PC Backup offer information technology services. They allow one to backup their files by saving them to their cloud storage. One can have unlimited storage for $59 a year.
There are many companies that allow you to backup data online. Examples of companies that allow you to backup data online include Carbonite Online Backup and My PC Backup.
A few great comprehensive websites that will offer you the online backup and data backup software you need are at the top ten best online backup, my pc backup, top-10-online-backups, techsupport alert, pc support, or backblaze.
For restoring data if your computer dies.
some PC makers did not hide a back up system some makes a hardware separation to make backup your system if you needed