General Question

Dog's avatar

How do I turn on my iMac- it is acting as if it has no power even though it does.

Asked by Dog (24827points) February 22nd, 2010

Help! I have a two year old iMac. I turned it off before going out of town and it will not start again.

I push the power button and nothing,

It is plugged in with power.
All cables are correctly put in.
No lights go on.
There is power to the outlet it is plugged into.

Can anyone offer me advice? If I can just get it started once I swear I will never turn it off again!

PLEASE Do not tell me to get a PC or that my computer is junk. I need to use a Mac and I will not get the help I need if we end up having a pissing war on computer makers instead.


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6 Answers

mrentropy's avatar

Sounds like your power supply might be dead.

How did you test the wall outlet to make sure it has power?

Is it plugged into a power strip? If so, did you try changing which outlet in there it’s plugged into? Or pressing the breaker reset on the power strip?

trailsillustrated's avatar

take the battery out and put it back in again

Dog's avatar

No battery as it is a desktop, will try to borrow a friends power cord and test that possibility.


Dog's avatar

Sadly nothing is working. I think it is the MPU and have made an appt at Apple.
(In the past it has required me to unplug the computer wait then plug in again to start.)

simpleD's avatar

Sometimes it looks like it’s off, but it is just in a perpetual sleep. Hold in the power for 10 seconds, and if it was on, it would now be off. Hit the power again and listen for the chimes.
If it was off and you’re getting no power, sometimes resetting the power manager helps. Check out these instructions for resetting the System controller and for some other tips you can try first.

Dog's avatar

@simpleD Thanks for the input. No chimes. Nothing actually.Thanks so much for the info. Perhaps it will help someone else with a misbehaving computer.

I took it in to the Apple store.

For those who might find this question in the future this is what they said:

It is most likely the power controller- located in the upper right corner of the computer. I might also be the logic board.

They ordered the parts- I had purchased the extended warranty and it is all covered but I will be sans computer for up to a week.

Gee- I may actually get some painting done… :)

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