Why is Wi-Fi not detected/working after upgrading HDD to SSD?
Before upgrading to an SSD, my MBP had this recurring issue of the Wi-Fi turning off (hollow Wi-Fi symbol; when Wi-Fi dies, selecting the Wi-Fi icon gives the option to turn it off although it's already off, turning it off prevents me from turning it back on) and staying off. But I could fix this my simply putting it to sleep, waking it, then turning Wi-Fi off and on, so it wasn't a big deal.
After recently upgrading my HDD to an SSD, the Wi-Fi icon has a crossed out symbol and states "Wi-Fi Hardware not detected" or shows a hollow symbol and won't turn on most of the time when I boot up my MBP. The no hardware installed issue would rarely come up before I upgraded, but would be resolved with a reboot or setting it to sleep. The set to sleep and wake up trick I've usually done to fix the problem doesn't work with the SSD.
Additionally, I have tried booting from the old HDD (via USB drive enclosure), and the Wi-Fi works like it did before the upgrade. I feel like this may not be a hardware issue. Bluetooth doesn't seem to be affected by this issue. I have tried resetting NVRAM, but that hasn't worked.
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