You're welcome.
CloeSound wrote: ... here all the details concerning my MacBook Air...
Thanks for your clear response.
From the info you posted, I believe you have a MacBook Air (11-inch, Mid 2011). Knowing your exact model helps me to recommend only potential solutions that are relevant to your specific model.
For your future postings, ¶ 2.11 of Apple Support Communities - Terms of Use cautions you not to reveal any personal information in posts. The Hosts have now edited out the Numero di serie (sistema) you posted above.
CloeSound wrote: ... If I search for Isight, inside my computer I can't find it.
Is like if the application has been cancelled, and I don't know why...
There is no separate iSight "application". Each application that uses iSight controls it separately.
To determine whether your Mac recognizes your iSight (probably called "FaceTime camera" in your MBA) launch your MBA's "System Information" utility.
After you launch "System Information", click the "USB" item in the "Hardware" item of the "System Information" window's sidebar. (If the reveal triangles are pointing to the right like ►, click on it so it points down like this ▼ to find the USB item.) Then look under each USB bus item in the "USB Device Tree" for your camera.
If there is no iSight or FaceTime camera listed anywhere in your "USB Device Tree", verify that you used the correct PMU/SMC "reset" procedure for your particular Mac model. (See more information on this below.) If your camera is still not recognized in "System Information", yours is most likely a hardware problem that will require a professional fix.
For hardware help, contact Apple or an Apple-Authorized Service Provider for service.
Unless you have a current backup, make one before giving your Mac to the repair technician.
CloeSound wrote: ...I guess I've to restart the PMU because I've a MacBook Air...
Correct! (but the PMU and SMU terms are used interchangeably in some technical articles. Confusing! 😕 )
CloeSound wrote:... PMU reset instructions for .... How to do it?
Use the instructions for "Resetting the SMC on portables with a battery you should not remove on your own" from http://support.apple.com/kb/HT3964. (This link is the "PMU" link from the iSight Troubleshooting article, but it takes you to an article entitled "Intel-based Macs: Resetting the System Management Controller (SMC)". Confusing! 😕 )
To be clear, I copy the pertinent instructions for your Mac here:
▼ Resetting the SMC on portables with a battery you should not remove on your own
Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009).
- Shut down the computer.
- Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
- On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
- Release all the keys and the power button at the same time.
- Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
CloeSound wrote:... to reset de SMC (I've found clear instructions) what is the risk? ...
There is no data or application risk if you carefully follow the above instructions. However, to be certain, I suggest you save all open changes. If you want to be obsessive, you can even make a fresh backup of your Mac before resetting.
CloeSound wrote:... I can loose informtaion-memory-application and programs?...
The only changes you might notice after resetting is that your preferences for the related settings may return to their default values. Related items that SMC controls include are listed in HT3964 article. I copy them here so you can verify that you are looking at the correct articles:
The System Management Controller (SMC) is responsible for many low-level functions on Intel-based Macs. These functions include:
- Responding to presses of the power button
- Responding to the display lid opening and closing on portable Macs
- Battery management
- Thermal management
- The SMS (Sudden Motion Sensor)
- Ambient light sensing
- Keyboard backlighting
- Status Indicator Light (SIL) management
- Battery status indicator lights
- Selecting an external (instead of internal) video source for some iMac displays
Message was edited by: EZ Jim
Mac OSX 10.8.5