HT202222: How to troubleshoot Wi-Fi connectivity in OS X Lion or earlier
Learn about How to troubleshoot Wi-Fi connectivity in OS X Lion or earlier
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Helpful answers
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Jan 20, 2016 5:37 AM in response to CarlosPtby lllaass,- Try resetting the SMC and NVRAM/PRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
- Try starting in Safe Mode
OS X: What is Safe Boot, Safe Mode?
- Boot to Recovery and repair the startup disk
OS X: About OS X Recovery - Apple Support
Also, can yoo connect via wifi in Recovery? That will help determine if you have a hardware proboem
- If it is repairable reinstall the OSX
How to reinstall OS X on your Mac - Apple Support
- If you do not have a backup use disk utility to restore the internal disk to an external disk so you can try to recover data.
Then format the startup disk and do a fresh install of OSX