We have never had much luck with wireless networking, but lately I've been trying to get the best out of our Belkin, since its cable connection is perfect.
Ok, when we first got it, the problem was that the wireless connection would randomly stop working, or would take forever to turn solid blue. However, it would alway, eventually, come on. We eventually replaced it, but the other router ended being worse.
Now, I've rescued the router, and after three days, I not once has the wireless worked. The signal is broadcast, since the network name shows up on all devices, but no connection can be established. Its the same regardless of any security variables: I've tried with and without security.
The model we have is an "N Wireless Modem Router" with a model number of F5D8636-4 v1.

We've already tried the restart method. Never works.

Follow this guide it should get you there.

run->ipconfig /all >myTcp.txt
and follow-up with the attachment myTcp.txt
or if you don't have sufficient privs on this board yet, copy/paste that content.

We're looking to verify

Code:

Node Type . . . . . . . . . . . . : Hybrid
Dhcp Enabled. . . . . . . . . . . : Yes
DHCP Server . . . . . . . . . . . : %your router's address%
DNS Servers . . . . . . . . . . . : %any valid DNS address%

Node Type requires a registery change
DHCP Enable requires an TCP change on the system settings for the Lan Adapter