How to back up my computer?

I have a hp envy 14 and the internal mic broke so i called hp and a employee remotely took over my computer and tried to fix it. he couldn't so the next thing he wanted to try was to re boot my computer to factory settings and lose all my data. so how should i go about saving my data, music, pics vids, etc?How to back up my computer?
You need application that can save files and data from computer.

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Optimize %26amp; speed up PC

Clone partition/disk

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Recover lost data

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Backup %26amp; restore files/system

Protect privacy %26amp; data securityHow to back up my computer?
Get a load of DVD-R discs and burn it all

or

get a USB drive and copy over all your important stuff to it.