What operating system are you using?
Normal procedure is:
Control Panel > system > devices (XP) scroll down the list and see if you have any entries with little yellow exclamation marks against them.
If you do, tight click the entry(s) and choose update driver (allow windows to search online for the correct driver)
If this fails, post back with make and model of Motherboard / sound card / chip and we can find the drivers for you.
Your sons Ipod stuff is gone I'm afraid...