the IP assigned threw my LAN?

Hi, Ive had a problem with a mac computer, that I bought second hand.

im getting a self assigned ip address when I plug it into the LAN Ethernet,

I tried to manually configure also proxy policy of the United Nations on the connection, that nothing has worked.

any ideas on help...

Thank you.

-This happens when yo creates a new network location?

http://Macs.about.com/od/networking/Qt/NetworkLocation.htm

-What happens when yo log in as another user?

When you received the Mac this has been done?

What to do before you sell or give away your Mac - Apple Support

If this is not the case, what to do now.

You can also try:

-Try to reset memory NVRAM/PRAM and SMC

MacIntel: Reset of the controller (SMC) system management

https://support.Apple.com/en-us/HT201295

Subject of memory NVRAM and PRAM

https://support.Apple.com/en-us/HT204063

-Try to start safe mode

OS x: what is Safe Boot, Safe Mode?

https://support.Apple.com/en-us/HT201262

-Start to recovery and repair the startup disk

OS X: on OS X Recovery - Apple Support

https://support.Apple.com/en-us/HT201314

OK it works 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 using disk utility to restore the internal drive to an external drive, so that you can try to recover the data.

Format the boot disk and then do a fresh install of Mac OS x

Tags: Mac

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