Internet won't work

[kaitlinumd]

I just moved and comcast installed our internet. It was extremely slow and sometimes didn't work. They came out and replaced some wiring. Anyway, not my roommate's PC works fine. My macbook is still slow to load. Some sites won't load at all (gmail; bank of america).

Does anyone know why this won't work on my mac?

 

[Dave Felix]

I just moved and comcast installed our internet. It was extremely slow and sometimes didn't work. They came out and replaced some wiring. Anyway, not my roommate's PC works fine. My macbook is still slow to load. Some sites won't load at all (gmail; bank of america).

Does anyone know why this won't work on my mac?

Try running the diagnostics test in the airport menu. Or may the router needs to be reset. It happens to me all the time when Im at my girlfriends place.