Question : Unable to obtain IP address without restarting router

I've installed a wireless network at a clients' house. Everything was working fine for several months. Recently I reinstalled one of the computers with windows XP home, then reconnected it to the network. Everything seemed fine. Shortly afterwards the client reported that they were unable to connect to the internet on the newly reinstalled computer.

I took a look at the setup and found that after after a restart there would be a strong wireless signal, but that it would be unable to obtain an IP address. Other wired and wireless computers on the network were able to connect without issue. The only way to re-establish the broken connection was to restart the router.

Router: BT home hub (built in wireless access point)

Computer 1: desktop - connected by ethernet (allways works)
Computer 2: laptop - connected wirelessly (not sure which card it's got) (allways works)
Computer 3: desktop - connected wirelessly with Belkin USB wireless G (problem connection)

All computers are set to receive an IP address automatically.
The problem computer has a strong wireless signal.
WPA-PSK encryption in use

Can anyone help me work out what is causing this problem? Part of me thinks that it must be something to do with the router, but it's just a bit odd that it started happening immediately after a reinstall.

Thanks

Answer : Unable to obtain IP address without restarting router

hello Philipk. i suggest that you try changing the wireless channel. i know it must sound awkward but give it a try. one of my clients had the same problem and it came up that another wireless network that was close created the problem.  please feed back