Personally I would save the files myself because the warranty on most, if not all OEMs does not include your data. If they lose it, corrupt it or just don't care you are SOL. You can burn a linux Live CD or make a linux Live bootable USB to boot from. You can then boot off the linux Live CD/USB and copy your files to an external storage for safekeeping. Then return the machine for warranty repair.
Or you can try saving your files and doing a factory restore. I looked up your user manual on Acer's web site. here are the instructions:
This recovery process helps you restore the C: drive with the original software
content that is installed when you purchase your notebook. Follow the steps
below to rebuild your C: drive. (Your C: drive will be reformatted and all data
will be erased.) It is important to back up all data files before using this option.
Before performing a restore operation, please check the BIOS settings.
1 Check to see if Acer disk-to-disk recovery is enabled or not.
2 Make sure the D2D Recovery setting in Main is Enabled.
3 Exit the BIOS utility and save changes. The system will reboot.
Note: To activate the BIOS utility, press <F2> during POST.
To start the recovery process:
1 Restart the system.
2 While the Acer logo is showing, press <Alt> + <F10> at the same time to
enter the recovery process.
3 Refer to the onscreen instructions to perform system recovery.
Here is a link from HTG to use ubuntu linux to save your files: http://www.howtogeek.com/howto.....-computer/
Some may say that is too hard, but you do want your data back, right? Or would you rather trust Acer to recover your data when their warranty in all likelihood says they aren't responsible for your data?