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I am Ashu with over 6 years of experience and will try to do my best to help you today. I am sorry to hear that you are having trouble. I know that can be frustrating. Hopefully, we can get this resolved quickly. Please allow me a few minutes to review your question to ensure that I don't miss anything.
Please follow the below steps to get this issue fixed:-
Try to start up from macOS Recovery
If your Mac seems to be turned on but nothing appears on your display, determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:
I hope this helps.