iMac not booting up

[Tyyper]

From a couple of days my iMac is not booting up.

First day it was stuck in the restart loop, I tried to open disk utility using command+r and command +shift +p+r but it wouldn't open the disk utility.

Yesterday, it was still stuck in the restart loop and sometimes won't even show the white screen with apple logo..

Today since morning I have tried countless time but it still won't show the white screen with apple logo...I have restarted countless times and even pull the plug to see if it does fix but nope

I read Mac support and it said to remove any accessories, even after I removed my headphones it wouldn't start.

Any help would do thank you

 

[bogdanw]

Try to reset the SMC https://support.apple.com/en-us/HT201295
and NVRAM https://support.apple.com/en-us/HT204063
"Turn on your Mac, then immediately press and hold these four keys together: Option, Command, P, R."

Start up your Mac in safe mode https://support.apple.com/guide/mac-help/start-up-your-mac-in-safe-mode-mh21245/mac
"Turn on or restart your Mac, then immediately press and hold the Shift key until you see the login window."

Recovery on an Intel-based Mac https://support.apple.com/guide/mac-help/use-macos-recovery-on-an-intel-based-mac-mchl338cf9a8/mac