Camera is not being detected on Mac I have a Macbook Pro (Retina) and recently my camera stopped working. 

I didn't drop it or anything, it's just not being detected as a hardware.

When I try to see why, System Report shows me: 

No video capture devices were found.


I don't have Apple support anymore and I can't find any comprehensive guide or tips for this kind of problem - I just found issues with the camera, but not itself not being detected.

I tried to reset NVRAM and other things such as Diagnose mode, which gave me this error code above:

4HDD/11/40000000:SATA(0,0)


But on subsequent runs of this diagnose mode gives me no error. I also think it's unlike SATA has to do with the camera, as it typically uses USB.

I'm kind of lost and I just want to take it to assistance only if there are no other options, since I need my computer to work.
For anyone experiencing this problem, I would suggest going with System Diagnose + NVRAM reset + SMC reset + Disk repair.

And if none of those work, follow @IronCraftMan advice and proceed with reinstalling OS X - you won't lose any data.

These steps worked for me.