You're welcome.
OK - Newest version of Yosemite - I'm betting that that qualifies as an event that occurred since "... several weeks ago..." - that is a pretty recent update if I am correct. (I never said an event had to be "unusual") Any other events that may not seem important may also be in the mix. Add - upgrade - update - software or hardware -- leaving no stone unturned?
When you take in, be sure and have a timeline of all events built since your last joy - may help to write it down and sort it out as if preparing for a presentation (it's all show biz, as they say - tell a Story)
I got curious about the camera not showing in the USB list... take a look at this article - "resetting the SMC" sounds like a simple effort and sure cannot hurt >
osxdaily.com/2015/08/09/mac-usb-ports-not-working-fix/
7 days ago - If multiple USB devices are not working on a particular port, or all ports, then it's obviously less ... For those with a MacBook, MacBook Pro, and MacBook Air, all you need to do is this: .... I also lose the Facetime camera on occasion (no reason).
best luck and don't forget to let us know how it turns out.
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