User Manual
Chapter 4. Troubleshooting
33
Sound problems .........................................................................................................................................................................................................................................................................................
No sound can be heard from the speakers even when the volume is turned up.
Make sure that:
• The Mute function is off.
• The combo audio connector is not being used.
• The speakers are selected as the playback device.
Fingerprint reader problems .......................................................................................................................................................................................................
The surface of the reader is dirty, stained, or wet.
Gently clean the surface of the reader with a dry, soft, lint-free cloth.
The reader repeatedly fails to enroll or authenticate your fingerprint.
If the surface of the reader is dirty, stained, or wet, gently clean the surface of the reader with a
dry, soft, lint-free cloth.
For details, see “Maintaining the fingerprint reader” on page 25.
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.
– To disable the sleep timer, click Start > Settings > System > Power & sleep; under Sleep, select Never in
the pull down menu.
A 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, and the system may shut
down as a result.