Full wifi/ethernet signal but no internet. macbook pro

I'm really hoping someone here can help me, as I'm getting pretty frustrated with my macbook now.

I have a late 2011 model 15" macbook pro running OSX 10.9.5 that refuses to connect to Internet on my home network. I have the same problem whether it's WiFi or through ethernet cable, I have full signal but not getting online. Every other device connects fine; android phones and tablets,xbox one, iPhone and other macbooks, all online and browsing the net.

I have had no problems connecting to other networks with my macbook pro before and I just tried at a friend's house to check, with no problems.

A little something, that may be a clue to someone: when I open network diagnostic tool, my macbook pro connects for something that seems like a microsecond and it tells me I'm connected to Internet and everything seems fine.

My IP is 192.168.0.5 subnet mask 255.255.255.0 and IPv6 is set to automatic. None of the options are checked under the proxies tab.

Now I've tried the following, in different order and a number of times, to no avail:

1. Renewing/turning off&on/inputting manually DHCP.


2. Restarting/resetting the router and the macbook.


3. Turning WiFi on/off.


4. Remove & add services (WiFi & ethernet).


5. Checked and copied all network settings from another macbook pro that's connected and online on my network.


6. Ran network diagnostic and assistant tools


7. Duplicated/removed/added location


8. Removed the ~Library/Preferences/SystemConfiguration folder.


9. Removed network password from keychain.

I've tried other things too, but can't remember what else right now.

I'm praying that someone out there has the magic words or the 2-click solution for me, but I would be grateful for a long thorough guidelines to solve it too! <3

Regards Trond