Acer Aspire S5-391 User Manual page 42

If you are recovering from a driver and application recovery backup on
optical discs:
• Insert the driver and application recovery backup disc ('Apps/
Drivers Recovery Backup') into the disc drive.
• Restart your computer and wait for the program to start, then go to
"Reinstall drivers or applications" on page 43.
If you are recovering from the driver and application recovery backup on a
USB drive:
• Insert the USB drive into a USB port. Open the USB drive in
Windows Explorer and double-click Recovery.
42 - Recovery