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Chapter 4. Troubleshooting
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.
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