iMac i5, 3 on 3 beeps, black screen

First of all, sorry for my bad English.

I bought my iMac in July 2011, Intel i5, 21.5 ", 2.5GHz, 8GB RAM, 500GB HD, HD 6750M and since November 2012 he stopped working. When trying to turn it back on 3 beeps sounded and did not turn on more.

After a few days, I turned it on normally, it was OK. On another day, the problem came back: while I was using it stopped working and did not turned on, just sounds of 3 on 3 beeps.

The screen does not turn on, goes black and no other sound is emitted beyond the beeps.

I've done testing of the RAMs, but nor replacing them it works.

Has anyone had this problem and managed to solve?

Answer this question I have this problem too

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The three beeps indicate a RAM issue. Try reseating the RAM one stick at a time in both slots to test both the seating, the RAM and the RAM slots.

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Thanks for your message.

I swapped the RAM, replace, turned on my computer alternating slots of RAM and the 3 beeps continue ...

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Have you tried an SMC and PRAM reset. If that doesnt work try contacting apple if the machine is still in warranty

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Thanks for the message. The warranty was one year, and it stopped working when it was 1 year and 3 months.

How do I do an SMC and PRAM reset?

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Juliana - I would still bring it into Apple ASAP as they often have extended warranty programs and/or can forgive some time, look very sad and shed a tear or two does wonders ;-} Good Luck!

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Juliana will be eternally grateful.
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