I have just purchased an iMac 24 inch desktop. Sometimes, upon pressing the start button at the back, the iMac turns on after some time. However, most of the times, though I press the start button several times, it doesn't turn on. But for shut down, when I press the same button, the window for shut down appears instantly.
iMac 24″, macOS 12.0
Welcome to the Apple Support Communities.
I recommend you review these helpful Apple Support articles: If your Mac doesn't turn on - Apple Support and If your Mac doesn't start up all the way - Apple Support.
If the issue persists, contact Apple Support: Get Support.
Jack
Welcome to the Apple Support Communities.
I recommend you review these helpful Apple Support articles: If your Mac doesn't turn on - Apple Support and If your Mac doesn't start up all the way - Apple Support.
If the issue persists, contact Apple Support: Get Support.
Jack
Start up Issues
