[. . . ] 2 Connect the AC adapter to the DC-in jack on the back side of the notebook. 4 While the Battery Indicator lights on, press the Power Button to turn on the Notebook. Switching on the Power: After you turn on the U21 for the very first time, do not turn it off until the operating system has been configured. [. . . ] The option menu allows you to launch the Windows recovery tool to reinstall the operating system to factory default. The brief introduction below will show you how to start the recovery tool and restore your system. System recovery will take a few minutes. Windows 8 Recovery Guide 1 2 Turn off and restart the laptop. During the laptop turn on process, press and hold F9 key to launch the tool. 3 Choose your keyboard layout. You can press “See more keyboard layouts” to see next page of languages. 7 English 4 Choose “Troubleshoot” to enter the recovery settings. (Also you can choose “Continue” to exit recovery system and continue to Windows 8 for files or data backup. ) There are two options for system recovery ˙˙Refresh your PC You can refresh your laptop to improve the system stability without losing your files. ˙˙ eset your PC R If you want to remove all of your files, you can reset your PC completely. Caution: All personal data and files will be lost. 5 ▓▓ Choose “Refresh your PC” [Click on “Next”] > [Choose a target operating system. ] > [Click on “Windows 8”. ] > [Click on “Refresh” to execute recovery function. ] Here are what will happen ˙˙Your files and personalization settings won’t be changed. ˙˙A list of removed apps will be saved on your desktop. ▓▓  Choose “Reset your PC” [Click on “Next”] > [Choose a target operating system. ] > [Click on “Windows 8”. ] > [Choose an option to recover your system] J  ust remove my files Only personal data and files will be removed, but computer settings will be kept. F  ully clean the drive The drive will be completely restored to factory default settings. > [Click on “Reset” to execute recovery function. ] Here are what will happen ˙˙All of your personal files and apps will be removed. [. . . ] ˙˙Your PC settings will be restored to factory default settings. 10 English ▓▓ Advanced options System Restore Use a restore point recorded on your PC to restore Windows. System Image Recovery Recover Windows using a specific system image file. [. . . ]