Lenovo Y520 Gebruikershandleiding - Pagina 26

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Lenovo Y520 Gebruikershandleiding
Chapter 4. Troubleshooting
Other problems
Your computer does not
respond.
The computer does not
start from a device you
want.
The connected external
device does not work.
• To turn off your computer, press and hold the Power button
for four 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.
• See the Boot menu of the BIOS setup utility. Make sure that
the BIOS setup utility is set so that the computer starts from
the device you want.
• Also make sure that the device from which the computer
starts is enabled. Make sure that the device is included in the
Boot menu in the BIOS setup utility correctly.
• While turned off, press the Novo button to select the device
you want the computer to start from.
• 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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