Cant use iMessages nor FaceTime on my mac

my problem started when i blocked my self out, someway, i couldnt download or open apps. When i open the application folder i cant find a thing. before that happened iMessages wouldnt let me sign in claiming that my apple ID is "new" and i needed to call AppleCare, that didn't work so i gave up but FaceTime worked so i didnt need it that much.

i formated my mac and reinstalled ML, and now i try to sign in on both iMessages and FaceTime, both claim that there is no internet connection, yet i can use everything else related to internet on my mac. App Store, Safari, Mail...etc all work.

ChristianJapan said:

What Mac and OS version ? What kind of internet connection / router you are using ? It could be some the ports used by iMessage and FaceTime are blocked while eMail and Web are still ok. If possible please share some more details on your environment.

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Macbook Pro, Mountain lion 10.8.2, i honestly dont know what you mean by what kind of router i am using, all i can say is that once i upgraded my OS it worked completely fine. the first time, before all those problems happened, it worked smoothly.

when i googled the problem something about the DNS, i think, should up and said to change it and so i did but it didnt work.

aristobrat said:

Are you on a network that doesn't allow full access to the Internet, like some businesses and schools? If so, they could be blocking your access.

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No actually not, no parent restrictions no nothing! I've used before.