Restoring to factory settings

Hello

I have an acer laptop that came installed with windows 8, and now i want to restore to factory default but i dont want to re download any of my files(over 100gb). Is there anything i can do to restore but still keep my files intact?

Welcome to EightForums.

Always Backup your DATA files.

You can use the ACER version of
http://www.eightforums.com/tutorials/5132-recovery-drive-create-usb-flash-drive-windows-8-a.html

Did you make the OEM manufacturer's Recovery Disks?

You can Order Acer recovery disks from here:

https://secure.tx.acer.com/RCDB/Main.aspx?brand=acer
or
Acer | Recovery Media
Check in Accessories
or check the main web site.
Acer Worldwide - Select your local country or region

I will make a recovery disk right now, how should i back up my files?

You can use Windows backup
Backup User and System Files - Windows 7 Help Forums
or
A 3rd party software like Paragon
Free license software - free backup, partition freeware & data recovery