Lenovo Yoga 2 Pro Lenovo - Manual (Page 35)

Chapter 4. Troubleshooting
31
Battery problems
Your computer shuts down
before the battery status
indicator shows empty.
-or-
Your computer operates
after the battery status
indicator shows empty. • Recharge the battery.
Other problems
Your computer does not
respond. • To turn off your computer, press and hold the Power
button for eight seconds or more. If the computer still
does not respond, remove the AC power adapter.
• Your computer might lock when it enters sleep mode
during a communication operation. Disable the sleep
timer when you are working on the network.
The connected external
device does not work. • Do not connect or disconnect any external device
cables other than USB while the computer power is
on. Otherwise, you might damage your computer.
• When using high power consumption external
devices, such as an external USB optical disk drive,
use an external device power adapter. Otherwise, the
device may not be recognized, or the system may
shut down as a result.