HP 280 G3 Maintenance And Service Manual page 71

Sound does not come out of the speaker or headphones.
Cause
Headphones or devices connected to the line-out connector mute
the internal speaker.
Computer is in Sleep state.
Internal speaker is disabled in Computer Setup.
The application is set to use a different audio device than
speakers.
Some applications can select which audio output device is used.
The operating system controls may be set to use a different audio
device as the default output device than what is expected.
Sound from headphones is not clear or muffled.
Cause
Headphones are plugged into the rear audio output connector.
The rear audio output connector is for powered audio devices and
is not designed for headphone use.
Computer appears to be locked up while recording audio.
Cause
The hard disk may be full.
Line-in jack is not functioning properly.
Cause
Jack has been reconfigured in the audio driver or application
software.
Solution
Turn on and use headphones or external speakers, if connected,
or disconnect headphones or external speakers.
Press the power button to resume from Sleep state.
CAUTION: When attempting to resume from Sleep state, do not
hold down the power button for more than four seconds.
Otherwise, the computer will shut down and you will lose any
unsaved data.
Enable the internal speaker in Computer Setup. Select Advanced >
Built-in Device Options.
Some graphics cards support audio over the DisplayPort
connection (if applicable), so multiple audio devices may be listed
in Device Manager. Make sure the correct device is being used.
To access Device Manager in Windows 7, click Start, select Control
Panel, and then select Device Manager.
To access Device Manager in Windows 10, type device
manager in the taskbar search box, and then select Device
Manager from the list of applications.
Make sure the application has selected the correct audio device.
Set the operating system to use the correct audio device.
Solution
Plug the headphones into the headphone connector on the front
of the computer.
Solution
Before recording, make sure there is enough free space on the
hard disk. You can also try recording the audio file in a
compressed format.
Solution
In the audio driver or application software, reconfigure the jack or
set the jack to its default value.
Solving audio problems 63