Lenovo S400U, 59RF0035 manual Troubleshooting Other problems

Models: 59RF0035 S400U

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Chapter 6. Troubleshooting

Chapter 6. Troubleshooting

Other problems

Your computer does not

To turn off your computer, press and hold the power

respond.

button for 4 seconds or more. If the computer still

 

does not respond, remove the AC 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 computer does not start from a device you want.

The connected external device does not work.

See the Boot menu of the BIOS setup utility. Make sure that the UEFI in 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. In the Boot menu in the BIOS setup utility, make sure that the device is included in the UEFI list.

While powered-off, press Novo button to select the device you want the computer starts 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 a high power consumption external devices such as an external USB optical disk drive, use external device power adapter. Otherwise, the device may not be recognized, or system shut down may result.

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Lenovo S400U, 59RF0035 manual Troubleshooting Other problems