Click the lock icon in the lower left corner of the Network preference pane and authenticate, if necessary. From the menu at the top of the window, select . A sheet will drop down. Click the plus-sign button to create a new location. Give it any name you want. In the new location, set up the Wi-Fi service with the same settings you used before. Click and test.
Wifi problems seem to crop up a lot on here and unfortunately there doesn't seem to be a 'one fix' solution.
However, sometimes any one of the following can help although, unfortunately, not always - in no particular order:
- Check wifi security - if it's WEP change it to WPA or WPA2 (preferably, as it's more secure)
- Change the wifi channel on the router
- Create a new Network Location: http://support.apple.com/kb/HT5289
- Reboot the router
Also take a look at this link and the links within the article for other ideas. They mainly reference Lion, but still seem to be relevant to Mountain Lion:
...and this link:
the intenet in recovery page works fine. But the won't work in the actual os.
I even have a windows 7 on the device and the internet works fine on it.
I ran a wifi diagnostic report and i have right on my desktop. Any use from that?!
Paul_31 thanks, but i read those links before. They weren't much of a help.
And another thing i need to mention is that i installed the os again, thinking that'll do it. But no changes occured...
We're making progress...
I ran i to safe mode. It was pretty slow, but the internet worked on safe mode. I did not tested any program, like yahoo messenger or anything else but safari worked. It loaded the apple main webpage, and the searching engine worked ok (a bit slower than my usual wireless speed)
I restarted it to normal mood, opened safari and the loading bar went a little bit further than before and loaded the website's name, but it got stuck again. didn't load it fully.
What i do now?
Done. The first step opened a text with these notes:
Did other steps flawlessly. I copied all of the texts opened during the procedure. And at the end a text opened with the name of bunch of programs...
- com.Proxifier.MacOSX.kext (1.3.5)
- com.Proxifier.MacOSX.kext.ProxifierKextUdp (1.3.5)
Unity Web Player.plugin
Adobe Unit Types.osax
Library/Address Book Plug-Ins:
iTunesHelper, FaceTab Pro for Facebook, Proxifier, RockMelt, Dropbox, Android File Transfer Agent
I honestly can't thank you enough for the time your putting into this.
The program you are speaking of, is a program to bypass website filtering in my country. Removing it is not such a problem cause its hardly an application!
In the safe mode boot i browsed with the application mentioned before open. I don't think that is the problem...
Anyway i deleted the program you said, and a few of useless internet programs. No changes still.