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Helpful answers
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Jun 2, 2016 12:50 AM in response to ohmynoby lllaass,- Does this happen when yo create a new network location?
http://macs.about.com/od/networking/qt/networklocation.htm
- Does it happen when yo log in as another user?
When you received the Mac was this done?
What to do before selling or giving away your Mac - Apple Support
If not do that now.
You can also try:
- Try resetting the SMC and NVRAM/PRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
https://support.apple.com/en-us/HT201295
About NVRAM and PRAM
https://support.apple.com/en-us/HT204063
- Try starting in Safe Mode
OS X: What is Safe Boot, Safe Mode?
https://support.apple.com/en-us/HT201262
- Boot to Recovery and repair the startup disk
OS X: About OS X Recovery - Apple Support
https://support.apple.com/en-us/HT201314
Does it work OK in Recovery mode?
- If it is repairable reinstall the OSX
How to reinstall OS X on your Mac - Apple Support
https://support.apple.com/en-us/HT204904
- 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
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Jun 2, 2016 6:33 AM in response to ohmynoby Grant Bennet-Alder,self-assigned IP address happens when you cannot make a connection to your Router, to get a proper IP address. It is usually caused by physical problems such as cabling, but if you configuration is really off, that can cause it as well.
System preferences > Network > Ethernet > (assist me) > ( Assistant )
... and set it up again from scratch, being careful to create a new named Location file, NOT the default. Give it a name like "Home", work, Starbux, depending on where you are.
Be sure to close the window and apply changes. If not joy, do a restart after major changes.