My MacBook Pro has booting Problems, Light keeps on Blinking. What to do?

My MACBOOK PRO (Early 2011) is having booting problems. It doesnt want to be shut off. If I do shut it off it would take an hour for it to boot. The light keeps on blinking when i push the on button. After a few times of pushing the button and the blinking light the light keeps steady and the MACBOOK PRO seems to be turning on . A Whirring noise/ sound can be heard. I then turn it off and push the ON Button again and the MACBOOK PRO finally boots. The problem repeats again when i turn the unit off.
I already had it checked by APPLE but they said they cannot find anything wrong with it!! Any help will be highly appreciated.

Shut the machine down by holding the power button until the computer is off.
Release the power button.
Reset the parameter RAM by powering up the machine then holding the key combination:
<COMMAND> + <OPTION> + p + r until you hear the restart chime three times
Then perform a SMC Reset by following this procedure from Apple:
http://support.apple.com/kb/HT3964
Lastly,
If you are running 10.5.4 as shown in your details... Boot to the System install disk
and select the language then select the menu item "Utilities > Disk Utilities"
repair permissions and repair the disk using the repair tool

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Hello!
I have a macbook Pro (late 2012) with OS X Yosemite (latest update) and I have some weird stuff going on in it...
2 days ago, I was using normally it, as I use it for work, when it suddenly freezes (never happened before). when i turn it on again, a empty symbol shows instead of the grey apple until i turn it off.
then, when i opened the recovery mode to see if my HD was damaged or something, it just do not shows my HDD at all to verify for integrity. I trun it off and let it be.
After several hours later, i decided to try to boot it again, and, for my surprise, it boots normally and all my files are normal. But after 10-15 minutes backing up all my important files to cloud services, it begins to be really slow. The spinning disk is shown even when i tried to close a finder window, move simple pages files or even to open the top menu to shut it down. The weird part is going even crazier: when i put a freezing gel (a gel packet that freezes and thaw without water is involved) under the macbook, the slowness is off and it works almost at normal speed. when the freezing effect is off, the slowleness is back
All this parts repeats very often.. sometimes the empty symbol appears when booting, sometimes it boots normally and after several minutes it becomes really slow. I tried to diagnose if a hardware problem was involved (pressing "D" after pushing the power button), but no problems were found at all.
what is going on? do you guys even had this? I hope it´s not the logic board!
(Sorry for my bad english)

The startup drive is failing, or there is some other internal hardware fault.
Back up all data on the drive immediately if you don't already have a current backup. There are ways to back up a computer that isn't fully functional—ask if you need guidance.
Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
Apple also recommends that you deauthorize a device in the iTunes Store before having it serviced.
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Shootis007, What is CC company? I googled CC and got many different answers.
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I really am puzzled. All you dear Mac users should know that the machine I dreamed of and really saved to purchase is giving me no end of troubles whereas my three windows machines sit there with their numerous stated deficiencies but gives me uninterrupted service

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https://en.wikipedia.org/wiki/Audiophile
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http://www.amazon.com/dp/B002GHBTNC
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EDIT: RESOLVED
For anyone else who finds their way here like I did, this link did it for me: https://forums.geforce.com/default/topic/527599/windows-8-issues-solved-please-r ead-if-you-39-re-having-black-screen-and-or-flickering-/
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Ciao.

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