Hello. My name is***** to JustAnswer. I'm reviewing your question now, and will post back with your reply momentarily.
Is your Mac connected by ethernet or wirelessly?
did you try a pram reset and start in safemode yet?
Shut down your Mac.Locate the following keys on the keyboard: Command (⌘), Option, P, and R.Turn on your Mac.Press and hold the Command-Option-P-R keys immediately after you hear the startup sound.Hold these keys until the computer restarts and you hear the startup sound for a second time.Release the keys.
Then let it try to restart. If it doesnt, shut down the mac after that, turn on, hold down left shift key
for a good 20 seconds to get it to boot in safe mode.
Let me know what happens. We will go from there.
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Unplug the ethernet cord and retry the pram reset/safe mode.
do not plug ethernet cord back in until after you have done the reset/restart safe mode.
(if you look at crash report, there are ethernet crash reports)
Kernel Extensions in backtrace:com.apple.iokit.IONetworkingFamily(3.2)[848B398F-4D96-3024-8092-6CD3534D2CCA]@0xffffff7f980f1000->0xffffff7f9811dfffcom.apple.driver.AppleIntel8254XEthernet(3.1.4b1)[F74DD10C-690C-3B74-98F5-F50E093A1E68]@0xffffff7f98709000->0xffffff7f98719fff
Okay, let me know what happens after you remove the ethernet cord and try to start it up again.
Tell me if it crashes and we will go from there.
You can keep it open as long as the 'technical support' pertains to this question.
What we were looking for is no wifi or ethernet cord. It was to test if the mac ran better/didnt shut down.
Let me know if it shuts down again with it connected to wifi and not connected to wifi. it will help us narrow
down the issue. You could have something as easy as a bad ethernet cord or port.