Built-in iSight not recognized by MacBook

Question

Hello. My iSight camera was working fine 3 weeks ago. I have not used it in any way other than with PhotoBooth. I don't Skype. I don't iChat. I've only used it to take photos of the interior of our apartment, with PhotoBooth. About a week ago, we began watching NetFlix movies on-line (wirelessly). Now, when I open PhotoBooth, the screen is black, and says "There is no connected camera." In System Profiler>USB, iSight isn't listed (I'm pretty sure it should be). I've tried all the fixes I've read on these boards-- to no avail. Help. Thank You.
2.4 GHz Intel Core 2 Duo, 2 GB 1067 MHz DDR3 Memory

Answer 1

You're most welcome.
The fact that it is working again is a good thing, but your solution may be a symptom of an intermittent hardware problem.
Cracked, loose, or improperly soldered internal connections can cause the sort of unexpected failure followed by unexpected return of proper function that you report.  Although you have corrected the problem now, if you have an intermittent hardware issue, vibration, even that from normal use, or changes in operating temperature can cause reoccurrence.
If you find future correction of the problem as hard and mysterious to remedy as it was this time, expect that you may have an intermittent hardware problem.  If the problem becomes annoying enough, ask your Apple-Authorized Service Provider to check out your symptoms.
Because such problems are not reliably repeatable, they can be difficult to find, so make a backup and expect to leave your Mac with the AASP for a while.  However, once found, your Apple service provider can usually correct the problem quickly.
Message was edited by: EZ Jim
Mac OSX 10.7.3