Hi,
· What have you done to fix the issue?
· Were you able to hear the sounds in videos and other music files before?
· Do you remember making any changes to the system?
Method 1:
I would suggest you to check whether the sound card drivers are installed properly on the system. If not I would suggest you to uninstall and reinstall the drivers from the device manager and check whether the issue is resolved.
How to manage devices in Windows XP
http://support.microsoft.com/kb/283658
Method 2:
I would suggest you to check the service ‘Windows Audio’ whether it is set to automatic. Follow the steps mentioned below.
a. Click on start and then click on Run.
b. Type services.msc in the run box and press enter to open the services window.
c. Locate Windows Audio and then right click on it.
d. Click on Properties and make the startup type to automatic.
e. Check whether the issue is resolved.
I would also suggest you to run the fix it that is present in the article given below.
How to troubleshoot sound problems in Windows XP
http://support.microsoft.com/kb/307918
Thank you and Regards.
Thahaseena M
Microsoft Answers Support Engineer.
Visit ourMicrosoft Answers Feedback Forum and let us know what you think.