New
#11
Type Troubleshoot in Start Search box, run the Audio Playback troubleshooter which should pinpoint the problem.
If it is indeed the driver, first uninstall it in Device Manager and reboot to see if reinstalling it this way helps.
If not uninstall it again in Device Manager including software, and in Programs and Features. Then reboot, enable Automatically deliver drivers via Windows Update (Step 3) to run all rounds of Important and Optional WIndows Updates to make sure they are current and see if WIn7 has a driver for it that it wants first.
If not import the driver from the audio Device's Support Downloads webpage. Use another browser if necessary.
If you can't complete these steps then run SFC /SCANNOW Command, if necessary SFC /SCANNOW Run in Command Prompt at Boot, then establish a Clean Boot, reboot, then if still neccessary work through the other Troubleshooting Steps for Windows 7