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My hands were a little wet when I touched the touchpad on my MacBook Pro 15". I think that a little water went into the cracks, or the tiny space around touchpad. The "click" mechanism stopped working properly. Multitouch still works perfectly.

I ordered a new touchpad, but NO! Problem remained. Touchpad still only registers "clicks" from bottom left corner.

I use my comp for work (Photoshop, Illustrator).

I tried loosening, tightening the screw on touchpad. Still nada.

Please help?

Edit: I need the physical "click." I use laptop for work. The touch to click does not function well with real work in Illustrator and Photoshop. I don't want to sound like a jerk, but please don't suggest the use of a mouse or "touch to click". These are not real answers to my question.

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If loosening the small screw didn't work, then I suggest you have Apple verify that it was installed correctly and works, or replace the trackpad again. – Adam Davis Mar 27 '12 at 18:49

Check your MacBook's battery. My trackpad stopped clicking consistently, and then sometimes locked in click-down, keeping me from de-selecting things. When I opened it up I noticed that the battery was puffed up a bit. If I removed the battery and closed the case, the trackpad clicked just fine. Apple replaced the battery and all's good.

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I had the same issue. I checked the battery, and it's also puffed up! I took it out and this solved all the trackpad issues I had. ow, hopefully Apple will be nice about replacing the battery!

I had recently had a lot of issues with the computer overheating, which had mysteriously stopped just before the track pad stopped working. Somehow related to the puffed up battery, perhaps?

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It might be broken. Take it into your local Apple Store and be truthful: you got water in the clicker. In the meantime, have you tried using a Magic Trackpad?

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If you really work in Photoshop or Illustrator, get the Wacom for god sake. Regarding the touchpad it is a common issue. Mine seems better when I start working but required more and more firm clicks during the work. Going to disassemble the laptop, fix the battery position, and reassemble.

That happened after I spilled a cup of tea on it 2 days ago.

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Try pushing down relatively hard on the trackpad, pressing on all four corners. Not sure what this does, but it fixed the problem for me (MacBook Pro 15" Mid 2014). I believe it pushes the battery back into place so that the trackpad can move down more when clicking it.

Source: the comments in this YouTube video.

EDIT I was thinking this could be caused by picking up the MacBook (with the screen folded open) with one hand on one corner next to the trackpad, as I do now and then. I can imagine this pushing up the battery a little bit.

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Pushing down on all four corners worked for me!

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Since you said that the multi-touch on the trackpad works, one work around is to enable the Tap to click setting in System Preferences > Trackpad:

enter image description here

This way you can tap your trackpad to click instead of having to rely on physically depressing it.

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I need to use the physical click because I use Photoshop, Illustrator, etc. Single tap doesn't work too well when you need to drag and drop, manipulate objects. – olya777 Mar 27 '12 at 17:30
Single tap is bad, but have you tried three-finger dragging? My trackpad DOES work, but three-finger drag is so convenient that I've almost stopped using the physical click... – daviewales Dec 4 '12 at 1:32

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