How do you enable Turbo mode?
1. Access to BIOS setting at system boot
2. Access "Advanced menu"
3. Access "CPU Configuration"
4. Access "CPU – Power Management Control"
5. Switch "Turbo Mode" setting to "Enable"
6. Switch Menu option to "Exit Menu"
7. Tap "Save Changes and Reset" then reboot the system
At last press key combination
Fn+F5 key to toggle between Silent, Balanced and Turbo Mode.
Note : This works only when your battery power cable(Charger) connector is plugged in to charging properly. Since Turbo mode requires more Battery Power.