My iMac won’t start!
Hey there so I had a problem on the because I restart it and loading it was slow so please help me thanks!
Please reset the NVRAM and if that does not work please restart in Safe Mode which can take up to 10 minutes. If neither work, please take the computer to your local Apple Authorized Service Provider to be diagnosed and repaired.
How to reset NVRAM on your Mac
Use safe mode to isolate issues with your Mac - Apple Support