Released June 2012 / Core i7 processor with Turbo Boost / Up to 1 GB DDR5 Video RAM

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Sound coming from right side of the trackpad

Hey, suddenly I started a weird clicking maybe a cassette sound from right side of my MacBook pro a1286. I closed my computer and opened again os. Was wiped. Still hearing the sound.

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What do you mean by wiped?

Do you get an image on the screen and is there an folder Icon with a banking question mark present?

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Also there are quite a few systems in this series. Can you plug in your systems serial number here: EveryMac - Lookup then paste the URL of the system here so we know what model you are working with.

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Hi, exactly, folder with question mark. I am not sure which one, but :(

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Look at the bottom cover you should see it there or if it has a removable battery inside of the batter compartment on the side wall.

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Found it, http://www.everymac.com/systems/apple/ma...

You need to use screwdriver for battery

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As you have a flashing question mark in the folder the system is looking for the system files (Reference: About the screens you see when your Mac starts up). So either the drive has been removed or they completely formatted the drive but failed to install the OS back on.

So... Where does that leave us? Assuming the drive is still present then you'll need to find a friend with a Mac and then either connect to his Mac back to back so you can leverage his system to prep up your internal drive.

We call this Target Mode and here is Apple T/N that explains how to set it up: Share files between two computers with target disk mode and as additional reference: Startup key combinations for Mac.

So here we'll interconnect your friends system and from it run Disk Utility. From within it, it should see your systems drive if not the drive was removed (let us know if that is the case). You'll need to format the drive and setup a GUID partition map and then create a Mac OS Extended (Journaled) partition. Once this is done you'll run the OS installer which your friend may need to download from the Apps Store for you.

If you can't interconnect your system with his you'll then need to prep up a USB thumb drive (16 GB) using his system here we also need to delete the FAT volume and reformat it using Disk Utility as we did above. Then run the OS installed to install the OS onto the thumb drive. You'll need to copy over to the thumb drive the OS installer as well. Once done you'll use this thumb drive as your boot drive and basically repeat the operations again.

Update (11/03/2016) CORRECTED

Here is the IFIXIT guide for your systems hard drive: MacBook Pro 15" Unibody Mid 2012 Hard Drive Replacement You may also need to replace the drive cable as well here: MacBook Pro 15" Unibody Mid 2012 Hard Drive/IR Sensor Cable Replacement as they often breakdown.

I would recommend going with either a 2.5" hybrid drive (SSHD) or a SSD if your drive is missing: Seagate laptop SSHD or a Samsung 850 EVO

Your system also has two fan units so the noise you here could be a dirty fan or the bearings are going on one of them.

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