Released October 24, 2011 / 2.2, 2.4, or 2.5 GHz Quad-core Intel Core i7 Processor

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Keyboard and track pad doesn't seem to be seated properly

After loosing the screw set for the bottom part of my mbp, it stayed like that for several months.

I now bought a new set of bottom screws but now, the keyboard seems to not seated well, only in the bottom section near the track pad.

That whole line of keys, including the Enter key just doesn't click properly, noisy when pressed and seems to have hard time clicking in and out.

Same issue with the track pad too, clickin is proplematic.

Batery is playing up too... it doesn't get charged when left on charge, SMC and/Pram reset few times and it works again, only to stop charging again later

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Can you give us some history on what you did here. It sounds like you replaced the keyboard and trackpad is that correct?

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Yes.

Water spill then it stops working.

When it was given to me, the mbp was totally irresponsive. No light or sound.

I removed the bottom case to take the hdd but then lost the screws. So the mbp sat on the shelves for quiet some time as is.

Jus two weeks ago, I tried smc and pram re settings (again!!) and... voila! It worked

I don't know how or why but it came back to life.

However, I've noticed the keyboard and trackpad seemed stuck and weird squeezy noises when pressed. So after purchasing the bottom case screws, the problem is a bit better but still there, this time only the trackpad and the bottom line of the keys (ie Shift-Cmd-zxc....,. )

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I think something more than water got in. You will likely need to replace the entire upper case here. While you might be able to replace the keyboard alone the fact the trackpad is also in trouble here will make getting the full upper case cheaper than trying to replace both.

Here's the IFIXIT guide on the needed steps: MacBook Pro 13" Unibody Late 2011 Upper Case Replacement.

This is a big job as everything must be removed. Are you up to the task?

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Fair enough

Just addendum to my earlier point.

The reason I assumed the keyboard and the mouse isn't placed in firmly is this; after I put the screws back in, the problem got a lot better. Before, the entire keyboard was making that squeezy noise and hard to press on them. Now, only the bottom bit.

I hoped that it's just a matter of placing the keyboard/track pad firmly in place!!

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Arrghhh...

And its an Macbook Pro 15" unibody late 2011 (model 8.2) not 13"!!!

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Doesn't change the diagnosis, just a different part will be needed. A squishy keyboard sounds like someone pulled the keyboard out but failed to put back the rivets or screws. Which is also why you'll need to replace the fully upper case.

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