User's Manual

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 If an error message appears on the screen, consult the software program’s
documentation for further information.
 If you are sure the operation has stop, reset the computer. (See “Resetting
the Computer” later in this chapter.)
Sound Problems
No sound is produced.
 Make sure that the volume control is not set too low.
 Make sure that the computer is not in Sleep mode.
 If using an external speaker, make sure that the speaker is properly connected.
Distorted sound is produced.
 Make sure that the volume control is not set too high or too low. In most cases,
a high setting can cause the audio electronics to distort the sound.
The sound system does not record.
 Adjust the playback or recording sound levels.
Startup Problems
When you turn on the computer, it does not seem to respond.
 Make sure that either the AC adapter is connected or the battery has power.
 For models with the “HDD preheat” feature: When turning on the computer in an
extremely low temperature environment, the computer will heat up the hard disk
before starting up. The Num Lock indicator glows amber to indicate the heater
is on. Wait till the heating is finished. However, if external AC power is not
available and the remaining battery power is too low for the heating to complete,
the computer may not start up. In case the computer fails to start up, turn
off the computer and leave it in room temperature for about an hour before
trying to turn it on again.