Model A1237 or A1304 / 1.6, 1.8, 1.86, or 2.13 GHz Core 2 Duo processor

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Wifi no hardware installed

Hello i swap my macbook air 2009 main board had ram issue i reheat and used for a couple of month until it died again i swap it but when taking out the screw i wrinkle a i little bit the wifi ribbon i turn it on it says on the wifi no hardware installed i restart the mac with command + s and use the command to check for any change on the ssd but says ok it reboots the wifi work for a while the it freezes and restarts by itself until again no wifi and with no wifi it does not reboot by itself so is it the cable or something else?

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First, determine if the problem is hardware or software related. I would expect it to be a hardware issue, but boot from a clean OS installation just to be sure.

If you've confirmed it is a hardware issue, first reseat the flex cable connection on both sides (logic board and WiFi card). Perhaps used compressed air to ensure the connections are clean. If that does not solve the problem, I'd replace the cable just because it is an inexpensive part. In my experience, if the system does not recognize the WiFi card, the card itself is usually the culprit, but WiFi flex cables on some models (including your early MacBook Air) can be problematic. While not completely unheard of, it is rare for the WiFi connector on the logic board to fail.

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