Every Mac sold since the mid-2000s with few exceptions included a Wi-Fi card, module, or chip that’s part of the motherboard. Thus, it’s surprising to any Mac user who fires up their Mac or is in the middle of using when they see a message that reads “Wi-Fi: No hardware installed” in the system Wi-Fi menu; equally vexing is “Wi-Fi: Not configured” when you’ve made no changes and were just using it. In both cases, a hardware problem could be the root.
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