If you've got another laptop, try that on the router wirelessly to eliminate router or laptop to blame. If it works on a cable this means the router is getting a wan IP & is dishing out IP's via DHCP which leads me to think its a security issue maybe?
try logging into the router and turning the w/l security off. it may be that your laptops w/l drivers need updating (odd for new laptop). is it a netbook? as some of these will only accept WEP encryption, especially linux based netbooks. If it works with no security then try it with WEP. If that works then you'll be fine (although it is hackable) but it usually is enough to keep others off your LAN.
maybe give laptop model, operating system & router details to assist...
I have another laptop, that works fine with the wireless network. I use the virgin wireless manager for that laptop and I've never had any problems with it. So I don't think the router (a Netgear g router) is the problem, unless it just wont let my new laptop connect with it.
My new laptop which is a HP G70 with windows xp, just cannot connect wirelessly, and it's now getting very annoying!!!
As I said, it works when connected with an ethernet cable.
I've tried with and without the virgin wireless manager, and both end up with the same problem.
I've tried manually setting the IP address, but I don't know the DNS server address.
When I click on repair connection, after trying to repair, it comes up with the following msg:-
Windows cannot finish repairing the problem as it cannot renew your IP address. For assistance contact the person who manages your network.