Sometimes if the Mic Boost is enabled it might give such distortions.
1. Click on Start - Programs - Accessories - Entertainment - Volume Control
2. Click on Options Properties - Choose Recording - Click Ok
3. Under Microphone - Click on Advanced and uncheck the mic boost options.
This might help in some cases.
Jim Coates -- senior forum member
Tech Support will refuse warranty service for speaker problems if the VLC media player is installed on laptops with Windows 7. This exclusion is NOT disclosed in the laptop warranty! Remove all players before contacting Tech Support, leaving only Windows Media Player.
jimco wrote:fox,To install the generic Intel driver without uninstalling SigmaTel :> Go to Start/Control Panel/System/ Hardware tab, then click on Device Manager. Go down to Sound, Video, and Game controllers and right click on SigmaTel. Choose properties. > Go to the Driver tab and click on Update Driver. > Answer "No" to the Windows Update question. > Choose "Install From List or specific location". > Hit next and then choose "Don't Search, I will choose driver I want to install". > You will get a list of Sigmatel drivers. Uncheck the box that says "show compatible hardware". > Select Intel, and then select "Intel AC 97 Audio Controller". XP replaces the SigmaTel driver with the Intel AC97. > To reinstall the SigmaTel just select "Rollback Driver".