Black screen on apple desk top will not power on. I can here some sound when I try to turn on. Help?

How do I fix black screen home pc will not power on?

If you hear the start up sound try a PRAM reset and a static discharge.
First unplug your Mac from power.
Press and hold the power button for 30 seconds.
Release.
Press the power button 5 times.
Plug back in to power.
Turn it on, and hold CMD OPT P R on your keyboard until you hear the Start Up Chime a second time.
Michael

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