You can shut the Mac down and start it up while holding down the Shift key. Step 3 - Boot Your Mac in Safe Mode: To put your Mac into Safe Mode is easy.It's also suggested to check the outlet by testing it with a lamp or other device. Step 2 - Check Mac Power Cable: It's a good idea to have a check on the power cable of your Mac to see if it works normally.Every Mac has a power button, usually marked with a power symbol.

How To Fix macOS Big Sur Mac Not Turning On Problems (Solutions): Based on our Mac Repairing experience, our certificated Apple Technicians suggest the following tips that may help solve your Mac Not Turning On issue. For instance, after upgrading to macOS Big Sur, some users may find their iMac won't turn on, MacBook Pro won't start up, or MacBook Air won't boot ( Fix macOS Big Sur Mac Not Turning On ProblemsĬommon Reasons That Can Cause macOS Big Sur Mac Not Turning On Problems (Diagnosis): With the recent release of macOS Big Sur, one of the most frequently met Mac Problems that we heard from our users are the Mac Not Turning On issues.