Help! Late 2008 strong wifi connection but no internet

lametown said:

Hello,

So I've got a problem getting any connection with my late 2008 MacBook.
I moved to Denver, CO from Chicago this summer, and when I arrived in Denver my macbook would no longer connect to the internet via a wireless router. I get a strong connection from the wifi router, and am connected, but the internet and no services actually work.

I'm running OSX 10.7.5.

I've tried:
the obvious restarting...
turning off and back on wireless network.
Attempted manually deleting and re-entering IP
deleting "systemconfig" and restarting (now I have no system config files...)

I've been stumped by this problem for a couple weeks. I have a desktop that I use, but I'd really like to get my macbook online again.

I was successful recently by connecting at a Starbucks. At first, I had all the same problems. Then I tried manually resetting my IP, fiddling with some random network settings in desperation, and then it began to work. It worked again at another Starbucks the next day. Then today at home, nothing....

Please help! Eternal gratitude to anyone who can.

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