I assume that you mean you cannot connect wirelessly? Have you tried connected it by ethernet? Does your router recognise your laptop?
You could try going into your laptop wireless connections and remove the settings for connecting to your hub. That is the SSID AND the wireless key. Then rescan for wireless networks and select you home hub network, then re-enter the wireless key.
Is this the procedure you followed?
Click Start - usually found on the bottom left of your computer screen. Type connect in the field displayed (do not press the ENTER key). Click Connect to a network. A dialog box will appear on the lower-right part of your screen, look for your hub’s network name. If you don't see your hub’s network name, click on refresh in the top right corner of the dialog box. Click on your hub’s network name. Click Connect. Enter your hub's wireless key in Security key. Click OK. Wait a few minutes while your computer connects.