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The wi-fi card on my MacbookPro died. After trying every software fix with no luck, I turned to iFixit to order a replacement. I accidentally ordered the wrong one, but iFixit made it easy to return and sent me the correct card.
Thanks to the step by step instructions, replacing my wi-fi card was a breeze. I was up and running in less than 30 minutes!
Don't be afraid! This repair is amazingly simple to do yourself!