New Comp. Can't Access Internet

I have a new PC I just built and installed software on, but I can't get it to access the internet.

I believe I have the drivers installed correctly, and it's hooked up to my cable modem, but it just says that it can't find the page any time I try to go somewhere.

Does anybody have any ideas what it might be and what I can try to fix it?

Well, nevermind. I tried it again today and it worked fine. Last night I spent hours trying to get it to work.

Oh well.