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Row of keys randomly become unresponsive (MacBook Pro Mid-2012)

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    hi

    This issue started maybe a month ago, but lately it's gotten more annoying and frequent. My asdfg keys randomly become unresponsive. I can smash/hold down the keys and it'd sometimes still take ages for the letters to show up. To fix it I'd usually have to keep smashing/holding them until I get lucky and it does go through, or until I reboot the machine or something. It's so sudden and I have absolutely no idea why this started happening. /= I've never spilled or gotten anything under the keys (have a keyboard cover on them anyway) and it's becoming super tedious.

    I'd take this machine to the Apple Store for looking over but I don't think they'd be able to fix it on the spot. Definitely can't go without my laptop for more than a few days for work and other reasons. I don't feel comfortable opening computers to fix it myself. If it's something tech support will take time to fix, I may as well just look into getting a new computer.

    ...These keys were working fine and then started becoming unresponsive halfway into typing this lol. And now they're okay again, for now.

    Anyone have any idea?
     
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    Do you use your Macbook Pro outside during the day at any point? If you do so often, I could possibly imagine that the keys are succumbing to humidity.

    Also, maybe you somehow activated "Enable Mouse Keys" as well. Try tapping your Option key five times to turn the feature off and see if that works.
     
    This probably isn't the issue, but just to be on the safe side... check your battery. If it's removable, take it out and check for any type of warping. If there's nothing obvious, put it down on a table, crouch down to eye height, and make sure it's perfectly flat against the table, then flip it over and check the other side. If it's not removable, you'll have to just check the the bottom of the case.

    My previous MacBook started doing a lot of weird stuff, mostly with the mouse (it would randomly jump across the screen, select things, or become completely unresponsive). Turned out it was because the battery had started to swell and was pushing on the trackpad from underneath. As soon as I removed the battery (because it seemed like the mouse buttons were stuck and I thought maybe I could pop them back out from the other side) the problem went away.

    I doubt that's what's causing your problem because I think all MacBook batteries are closer to the front edge of the case and would interfere with the trackpad long before it affects the keyboard, but doesn't hurt to check - a battery that has started to swell can eventually leak or burst, so it's a good idea to check it once in a while anyway (especially on Macs, as they seem to have this problem more than other laptops)
     
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