Sigma Tel High Definition Audio CODEC installed and up to date but no sound. 1 person needs an answerI do too

Maybe someday the XP forums "Ask a question" dialog will ask these questions automatically when a new thread is started so I do not have to ask them every single time. It might even be possible to resolve an issue in a single reply when enough information is provided.Please provide additional information about your system:What is your system make and model?What is your XP Version and Service Pack?Describe your current antivirus and anti malware situation: McAfee, Symantec, Norton, Spybot, AVG, Avira!, MSE, Panda, Trend Micro, CA, Defender, ZoneAlarm, PC Tools, Comodo, etc.Does the afflicted system have a working CD/DVD drive?Do you have a genuine bootable XP installation CD (this is not the same as any Recovery CDs that came with your system)?If your system was working before, what do you think might have changed since it last worked properly?Fill in the blank: My system was working fine until: ____________________________________________.The crystal ball took the day off today, so provide some more information about what no sound means to you.When do you have "no sounds"? Do the Windows sounds work from the Control Panel Sounds and Audio Device tabs and some media player is not working? Are you watching videos, playing a game, listening to the radio, etc.Please provide additional information about your system and devices:Click Start, Run and in the box enter:msinfo32Click OK, and when the System Summary info appears, click Edit, Select All, Copy and then paste the information back here.For video driver information, expand the Components, click Display, click Edit, Select All, Copy and then paste the information back here.For audio driver information, expand the Components, click Sound Device, click Edit, Select All, Copy and then paste the information back here.There will be some personal information (like System Name and User Name), and whatever appears to be private information to you, just delete it from the pasted information.This will minimize back and forth Q&A and eliminate guesswork.Do, or do not. There is no try.I decided to save up points for a new puppy instead of a pony!