Power button on brand new iMac doesn't work properly?

Hello,
I am having problems with the power button on my brand new iMac which was purchased 2 weeks ago. Some days I press the power button and everything works fine. And then some days, I get no response from the power button. I then just unplug and replug the power cord from the surge protector back in and then the power button works!
I also shut down every night - I don't put the computer to sleep.
Can someone tell me what is going on? I've searched these message boards and see old post from others out there have also dealt with problem.
Any advice or insight would be most helpful! Thanking you in advance.

A couple of things first your machine has a 1 year warranty and is covered by 90 days of complimentary AppleCare. You should contact AppleCare to get the machine fixed.
Next please carefully read your owners manual, below is what Apple specifys,
"If you'll be away from your iMac for less than a few days, put it to sleep. When your iMac is in sleep, its screen is dark. You can quickly wake your iMac and bypass the startup process."
Personally I only let the monitor sleep, my system has been running like this for 4 years and is the most reliable computer I've ever owned.

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Power button on brand new iMac doesn't work properly?

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