Hi david1109,
I understand that your microphone is not working when you are using Skype. I will try my best to help you with this issue. To better assist you, could you please give me some more information.
1. What is the Model Number of your laptop? LINK: How Do I Find My Model Number or Product Number? http://bit.ly/1a3NxUe
2. What operating system are you running on the laptop?
3. Have you run updates for your computer and Skype program?
Please let me know and I will be happy to help you.
Thank you,