If Your Pc Has An Audio Problem - HP Vectra VL series 8 Maintenance Manual

No Sound When
Running Any
Applications
No Output from the 8-
bit or 16-bit Digitized
Sounds
The Volume is Too Low
Audio Input from the
Microphone is Too Low,
or No Audio At All

If Your PC Has an Audio Problem

Check that the output volume is not set to zero. Use the volume control
on the front panel. Make sure the headphones are not connected
directly to the CD-ROM drive, if your CD-ROM drive has a headphones
connector.
If you are using Windows NT 4.0, check the volume, mute, and balance
settings. Refer to the operating system documentation for more
information.
Remember also that plugging the headphones into the front panel cuts
out sound to the internal speaker and to external speakers connected
to the audio Stereo Out jack.
When your PC starts up, the integrated audio interface may have no
IRQ or DMA settings. These settings are initialized by software upon
startup. Your system files may not have the necessary entries.
Absence of sound can also be caused by a hardware conflict. Hardware
conflicts occur when two or more peripheral devices compete for the
same signal lines or channels. Conflicts between your audio interface
and another peripheral device might be due to the settings of the I/O
addresses, IRQ channel, or DMA channel. To resolve the conflict,
change the settings either of the audio interface or of any other ISA
accessory in your system.
This might be due to the DMA channel selected or to an interrupt
conflict. Use your operating system's audio control software to change
the audio interface's DMA channel or IRQ setting.
If you plug devices with a low-impedance (less than 32 ohms) into the
Line Out connector of the audio card, the volume will be low. You should
connect low-impedance devices to the Speaker Out connector on the
audio card.
Check that the microphone specifications meet the requirements of the
16-bit sound components. The microphone should be a 600-ohm
electret type.
3 Troubleshooting Your PC
If Your PC Has an Audio Problem
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