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No Audio, some keys Macbook

So here's my problem, my MacBook Pro 2012 non retina is giving me a lot of problems, here's a list..

I have no audio - internal audio is not listed AT ALL in system preferences, 

Some of the keys on my keyboard don't work LIKE NOTHING like sometimes I'll press "P" and it'll jump through the text. I don't have numbers and I have to use my on screen keyboard. my trackpad is also crazy unresponsive sometimes it'll just stop working! If I use a Bluetooth mouse my primary click comes across as my secondary.. So my question is WHAT THE HECK AM I MEANT TO DO? 

Hi,

First, try resetting the NVRAM: https://support.apple.com/en-us/HT204063 and SMC: https://support.apple.com/en-us/HT201295.

Sometimes a battery can "bulge," expanding up into the trackpad/keyboard area and the cables there. Obviously this can cause issues, issues such as your Mac is experiencing. To see if this is the case, the bottom case needs to be removed so the battery can be visually inspected. If the battery is expanding, that is almost certainly the cause. It will need to be removed and properly disposed of ASAP, before it cracks open, exposing dangerous chemicals inside. If the battery is not expanding, check the cables from the trackpad and keyboard to the logic board to make sure they're properly connected. If you don't feel comfortable removing the cover and/or handling a bad battery, go to an Apple Store "genius" bar, where they can help: https://support.apple.com/contact.

I've opened my MacBook already it's not that.. the pram thing is a no go too

最后更新：2017-09-15 08:37:02

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