Just few questions:
Have you upgraded original Vista version hat you got with your notebook or you have installed clean Win7 version?
Are all hardware components properly installed and listed in device manager?
How do you test mic functionality?
Is Microphone listed in sound properties > Recording devices?
Is mic set as default device?
1. Clean Win7 installed.
2. A few hardware devices are missing, including the fingerprint reader and an unknown device. There was one more listed that I cannot recall right now (don't have the laptop with me).
3. Mic is not listed in recording devices. Have tried skype and windows sound recorder.
4. Mic not listed, therefore it is not the default device (no devices available to select).