Acer Ferrari 3400 User Manual page 80

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There is no audio coming from my computer.
Check the following:
• The volume may be muted. In Windows, look at the volume
control icon on the taskbar. If it is crossed-out, click on the icon
and deselect the Mute option.
• The volume level may be too low. In Windows, click on the volume
control icon on the taskbar, and then use the slider control to
increase the volume level.
• If headphones are connected to the headphone jack on the
computer, your computer's built-in speakers will be turned off.
My external microphone does not work.
Check the following:
• Make sure that the external microphone is properly plugged into
the microphone-in jack on the computer.
• Make sure that the volume is not muted or set too low.
I can't eject the optical disc with my computer turned off.
The computer needs to be turned on for the optical drive eject button
to function.
The keyboard does not respond.
Try attaching an external USB keyboard to one of your computer's USB
ports. If it works, the internal keyboard might have become discon-
nected. Contact your dealer or an authorized service center.
The floppy disk drive cannot read a diskette.
Check the following:
• Make sure the diskette is properly inserted in the floppy disk drive.
• Make sure that the diskette is formatted.
• Try to read a second diskette. If this works, then the first diskette
might have a problem.
• If the diskette is not the cause of the problem, then the drive head
might be dirty. Clean it using a drive head cleaning kit.
The optical drive cannot read a disc.
Check the following:
• Make sure that the disc is free from scratches or smudges. If the
disc is dirty, clean it using a disc cleaning kit.
Troubleshooting