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|MacBook Pro 15" Unibody Early 2011||
|MacBook Pro 15" Unibody Late 2011||
|MacBook Pro 15" Unibody Mid 2012||
It started with intermittent WiFi drops and finally caused total disappearance of WiFi module. Replacing the Airport/Bluetooth cable healed the problem at once.
While the problem appeared as either software or electronic, the actual cause was this flat cable. It routes over optical drive enclosure and (I guess) gets internal cracks over a time.
I read dozens of articles on the internet and finally found the story where guy got all his MBP replaced piece by piece at huge cost until the cable was replaced. So thanks to the fella, I decided to start with the cable.
One day the wifi on my Macbook Pro went out. I was bummed! I tried a few software tricks like re-installing the OS, resetting the SMC and NVRAM, but nothing worked! Still "no hardware installed" for the wifi card. I had to think about how I was going to access the internet on my laptop all the time, it had basically become a glorified desktop. Can I physically connect to the network? Did I bring my ethernet cable? It was a total drag.
Repair was extremely easy! I took apart the computer, carefully followed instructions and replaced the part. I ordered another part just in case that didn't end up being the issue, but it was just a simple cable replacement.
Don't be lazy and put off the repair! Order the part, make it happen, don't live in misery. You use your computer every day, when it's not up to spec you're limiting yourself.