HP pavilion n5400 Manuale Di Servizio

Solving Problems with Your Computer 
Troubleshooting Techniques 

90 Reference 

Guide 

Troubleshooting Techniques 

This section contains solutions to a few common problems and troubleshooting 
techniques for your HP notebook PC.  

Audio problems 

If sound is not audible 

•  Press Fn+Up arrow several times. 
•  Press the volume control up button several times.  
•  Click the speaker icon on the taskbar (if present) to ensure that Mute is not checked 

and the Volume Control slider is not set to the bottom. 

•  When you are operating your computer in MS-DOS mode (for example, when 

running MS-DOS games), you may find that the sound does not operate properly. 
Use Windows applications for full use of sound capabilities.  

If sound does not record 

•  Check software controls for recording sound: Click Start, All Programs, Accessories, 

Multimedia (or Entertainment), Sound Recorder. 

•  In Volume Control, click Options, Properties, and make sure the microphone is 

enabled in the recording controls. 

If the PC card detection beep(s) at startup are very loud and volume cannot be 
adjusted 

•  Download the latest audio driver from the technical support area of the HP notebook 

web site www.hp.com/notebooks. 

You may also want to test the speakers and sound with diagnostics. See “Testing 
Hardware Operation” on page 111.