Resetting the SMU System Management Unit
- Unplug all cables from the computer, including the power cord.
- Wait 10 seconds.
- Plug in the power cord while simultaneously pressing and holding the power button on the back of the computer.
- Let go of the power button.
- Press the power button once more to start up your iMac G5 (20-inch iSight).
The iMac G5 (20-inch iSight) ports are shown below.
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