How to make a backup of files

I installed windows 7-2010 OS, 32 or 64-bit, 4 GB RAM (w / 2G RAM unused), 250 G HD Yes, former Toshiba computer with all the bells and whistles that new computers do not have and still works very well for what I use it for.  question, I never backed up computer.  use the flash player.  you want to backup computer in case where it crashes, get the malware or viruses.  don't want to lose the resettlement of the time software (Windows Home & Student 2010 edition) if the computer was down.  not intelligent computer so if someone answers, please give me specific instructions on how to go about it.

Hello

You can read this article to find out why you need an external drive for backup of the system.

What is a system image?: http://windows.microsoft.com/en-ca/windows7/what-is-a-system-image

Thank you.

Tags: Windows

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