Acer Aspire 5 User Manual page 32

32 - Recovery
5. Make sure all settings are properly made, click Next to continue.
Warning
Turn on "Data erasure" will remove all of your personal files and
accounts, along with pre-existing drivers that may affect your Windows
installation.
6. Click Reset to continue.
7. You will be shown the reset progress on the screen. The screen will
turn off during the reset process.
8. The screen will turn back on when it is installing Windows. Your PC
will restart several times during the reset process.
9. Follow the process until it completes.
10.When your PC has completed the reset process, Windows will use
factory default settings.