Help!!! Built in iSight Not Functioning on Brand New 24" iMac

Question

I just purchased an iMac 24" 2.16 Ghz Intel Core 2 Duo Processor computer, and the built-in iSight camera will not function.
The store that I bought the computer from, informed me prior to purchase that several previous customers experienced the same problem, and that I should return to the store should I experience the same thing.
Is there a software fix for this????
Is there a preference fix for this???

Answer 1

As stated. I followed the Apple Support webpage instruction listed below. Still no success. My isight will not function with any other application (ie. iChat, iMovie, PhotoBooth, etc...)\
G5 (iSight) or later, the MacBook, or MacBook Pro.
1. See if the issue is application-specific.
Try another application (iSight works with applications like iChat, PhotoBooth, and iMovie HD 6) to see if the iSight camera exhibits the same behavior in all applications. If it only happens in one application, try reinstalling that application.
2. See if the issue is user-specific.
Test your iSight camera in another user account. If the issue only occurs in one user, the issue would be isolated to user settings.
3. Find out if the computer recognizes the iSight
Check System Profiler (in the Utilities folder, inside the Applications folder). Under the USB header, check to see if the iSight camera is detected.
4. Reset SMC or PMU Reset your computer's SMC or PMU, and then check System Profiler again. (SMC reset instructions for iMac G5 (iSight), Intel-based iMacs; PMU reset instructions for MacBook and MacBook Pro.)
If your built-in iSight camera is still not behaving correctly after trying all these steps, you may need to contact Apple or an Apple-Authorized Service Provider for service.