Wireless pickup but no internet

In our network we can pick up the wireless signal, but for some reason lately you have to put in a static address to be able to actually connect.  The wireless router is a netgear router.
TomBallaAsked:
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SouljaCommented:
I usually see this when the device isn't authentication properly. It will even look like it connects, but really isn't. Can you confirm that your passphase is entered correctly and that you are using the matching type of authentication set up on the router?
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TomBallaAuthor Commented:
Yes, I am putting in the correct passphrase and it looks like the authentication is fine.  If I put in a static address on the computer it works fine.
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SouljaCommented:
How about when you are in close vicinity of the router?
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TomBallaAuthor Commented:
Even in close proximity I still have to put in a static address.
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MikeShubCommented:
Is DHCP enabled on the router?
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TomBallaAuthor Commented:
No, DHCP is given from an sbs server.
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Jakob DigranesSenior ConsultantCommented:
When yoyu're able to connect setting a static IP - it means that you are authenticated ...
So the problem is something around DHCP

I've been around this problem several times at customer sites. Try the following first:

- are there free DHCP leases on server?
- is DHCP service reset on server?
- Is the AP and any inbetween switches reloaded/rebooted?

And, if you're into some adventures - do the following:
install Wireshark on client PC and server (www.wireshark.org) This is a network monitor and will do NO harm to clients, server or network

start a trace on clients wireless network card, and start a trace on DHCP server.

Look for DHCP packets AFTER the connecting times out and an APIPA address is handed out. To sort on DHCP click on PROTOCOLS column ..

This is how the DHCP process works:

Client PC sends a DHCP Discover BROADCAST packet looking for DHCP server
DHCP server reponds with HERE I AM
Client PC sends a DHCP REQUEST asking for IP-configuration
Server reponds with an ACK letting the client know the address is the clients for the lease time ...

See where it stops to troubleshoot easier
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