You may run the troubleshooter and check if this helps. i would suggest you to post back if you get any error messages.
Steps to run troubleshooter:
原帖地址: TechSpott - Computer and technology forums http://www.techspott.com//showthread.php?p=13044
1. Click Start button, and then click Control Panel.
2. In the search box, type troubleshooter, and then click Troubleshooting. Click View all, and then click Playing audio.
3. Follow the instructions of the wizard.
For more information
http://windows.microsoft.com/en-us/w...roubleshooting
If the issue still persists then, I would suggest you to download and install latest drivers from manufacturers website and check. You may also try installing the drivers in compatibility mode and check.
For further details refer the article mentioned below.
Tips for fixing common sound problems
http://windows.microsoft.com/en-us/windows7/Tips-for-fixing-common-sound-problems
I hope this information was helpful!
Brett M,
Windows Outreach Team