High pitched noise coming from inside a flat panel monitor.

Cause

Solution

 

 

Brightness and/or contrast settings are too high.

Lower brightness and/or contrast settings.

 

 

Solving Audio Problems

If the computer has audio features and you encounter audio problems, see the common causes and solutions listed in the following table.

Sound cuts in and out.

Cause

Solution

Processor resources are being used by other open applications.

Shut down all processor-intensive applications or cut down the number of applications running.

No sound.

Cause

Solution

Volume has been muted or lowered.

Double-click the speaker icon on the taskbar, and clear the Mute All check box or adjust the volume level.

External speakers are not turned on.

Turn on the external speakers.

External speakers are plugged into the wrong audio jack.

Check the sound card documentation for proper speaker connection.

A device, such as headphones, is connected to the line-out jack.

Turn on and use headphones or external speakers—only connect to one device at a time.

Solving Keyboard and Mouse Problems

If you encounter keyboard or mouse problems, see the documentation that came with the equipment and to the common causes and solutions listed in the following table.

Keyboard commands and typing are not recognized by the computer.

Cause

Solution

 

 

Keyboard connector is not properly connected.

Replace the keyboard.

 

 

Computer will not respond to a USB keyboard or mouse.

Cause

Solution

The keyboard or mouse is not connected to the computer.

Make sure that the keyboard and mouse cables are connected to the computer.

Solving Audio Problems

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HP 500B VS695UT VS695UT#ABA manual Solving Audio Problems, Solving Keyboard and Mouse Problems, Sound cuts in and out Cause