24" iMac don't restart!

Hello, I run a data recover data program last night. This morning the computer was on the screen saver mode but when I restarted it, nothing happened. I just have the Apple logo with the gray wheel or simply a white screen with a DON'T sign on it (a circle with a crosed bar).
Please, I need help urgently, does anybody knows what should I do to fix this problem?

HI,
Sounds like the data recovery program might have generated an incompatibility issue.
Go here. Mac OS X: "Broken folder" icon, prohibitory sign, or kernel panic when computer starts
Carolyn

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Hey there, so I'm at the end of my tether here because I've barely been able to do anything on my iMac as of late because I've been experiencing severe freezing issues.
I'll start from the beginning:
I've had the iMac since mid-2011. It's a 27" iMac with a 3.4 GHz Intel Core i7 processor, 8 GB 1333 MHz DDR3 memory, and AMD Radeon HD 6970M 2048 MB graphics. It's served me so well over the years, but 2015 has been the start of something hellish.
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12/02/15 21:16 watching Netflix full screen through chrome, Netflix was paused, when going to unpause screen goes a cardboard orange colour with faint grey vertical lines. After less than a minute iMac restarts itself.
Taking photos whenever I could of said crash, like so:
I was at the point this evening where I tried on 4 consecutive restarts to get a game of Diablo 3 going and couldn't get more than 1 minute into playing before this crash happens.
What on Earth could be the issue? Because the Genius guys certainly didn't find any problems after their week long 'intensive' checkup...
Thanks all!

I've got the exact same machine and I also had a graphics card issue.
When the Mac starts-up, the graphics card on the Intel processor does
all the initial work. If you get to the stage when you see your user accounts
you know that the graphics processing has been delegated to the on-board
dedicated graphics card.
If you do get to this stage and it holds steady, it's probably not the graphics
card that is causing the problem. When mine crashed, it also took out my
USB ports and I also had a corrupt hard drive! Don't judge a underlying
issue by it's apparent symptoms.
My problems started in September 2014. If you are in the UK, judging by the
£13, you have 6 years for your machine to function reasonably properly and
for the reseller directly (Apple indirectly) no fix any issues free of charge.
Apple does advertise it's 6 year liability to comply with the Sale Of Goods Act
which is unprecedented in the commercial world so five stars their! But your
legal contract is with the reseller. You are also entitled to any costs you
incurred like delivery of the machine.
I wrote to my reseller and they agreed without question. After signing some
papers to agree with the Apple part replacement program or something it's
been running as new.
If you haven't done so already, contact the re-seller and explain the problems
and show them the evidence you have. If that fails then you should be able to
take the machine to a Apple specialist for it to be diagnosed with all costs
covered by the Apple programme.

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Hi all, I did a search and found some similar posts, but all were what seemed a little bit different issues. So, I hope this isn't a bother to anyone if it has been addressed before.
I have a PowerPC, iMac G5, 20" display, and it will from time to time simply restart. Sometimes it will do this a number of times repeatedly. I was just now working on my Powerbook when I hear my iMac in the office upstairs restart.
I can't figure this out. Does anyone have an answer, or at least be able to point me in the right direction.
Thanks

Just an up date. I called Apple and they set an appointment for me at my local Apple store. Took it in that night (Monday) and got it back Saturday afternoon.
It was in fact the power supply that was the problem. Three months out of warranty so it was on my dime. Cost me $192.62. Ouch! That hurt.
Especially since the repair tech admitted it is the exact same piece of hardware that is envolved in the Extended Repair Program. Only thing is, Apple's not admitting it's a problem on my iMac. The only difference is mine has the ambient light sensor.
I really am disappointed in Apple. For one thing........... I don't think I should be dealing with any type of hardware failure at 15 months old. I also don't believe I should need to buy extended protection plans for anything. Especially for the healthy price Apple wants for their products. You'd think you could count on a little quality for the bucks.
Anyway, just thought I'd let everyone that replied what the out come was. My iMac's back on the desk and working fine............ wonder how long before I have more problems. Now that I can't buy anymore protection.
Jack

24" iMac don't restart!

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