Acer Predator Helios 500 User Manual page 27

3. Select Remove everything to reset your PC back to its
factory default. This process will reinstall your operating
system and remove all of your personal files, apps, and
settings.
4. Select Just remove my files if you are keeping your
computer. This will be quicker, but less secure. Files may
still be recovered with a file recovery program.
Select Remove files and clean the drive if you are not
keeping your computer. This process will take longer, but
will be more secure.
Warning
Selecting "Remove files and clean the drive" will remove all of
your personal files and accounts, along with pre-existing drivers
that may affect your Windows installation.
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