How do I restart my iMac without a keyboard?

How do I restart my iMac without a keyboard? All replies. You can force it to shut down by pressing the holding down the power button on the back of the iMac. Then, press and release the power button normally to start it up again.

All replies. You can force it to shut down by pressing the holding down the power button on the back of the iMac. Then, press and release the power button normally to start it up again.