Why Is My Imac Stuck On The Loading Screen. Release the keys. However your Mac cant.

Press and hold the power button on your Mac for up to 10 seconds until your Mac turns off. This step is mandatory for Intel-based machines that are frozen on the loading screen. There are ways to fix it as this article explains.
There are ways to fix it as this article explains.
To possibly find out Why is my Mac stuck on the loading screen - and if its not doing an OS update. Several ways can help deal with this issue. Force it to turn off press hold power button for several seconds until it turns off then hold down Command-V as you turn it back on. One of the reasons a Mac can get stuck on a loading screen is following a macOS update which means there is a wide number of solutions.
