windows 7 laptop wont connect to wireless router

I recently bought a new windows 7 laptop and tried to connect into my my router it did this successfully but it always now says no internet access when i have full bar wireless connection it only works if i am beside the router but if i walk away it doesnt work my other windows xp laptop works just fine even from 30ft away, my windows 7 laptop when troubleshooting the network that there is a problem with the wireless adapter or access point but its a new laptop i also bought a new home hub from bt because i thought that was the problem, it also says when troubleshooting that 'the connection between your access point, router, or cable modem and the internet is broken'

then you have a hardware problem or the Win firewall or some other Internet Security program is causing it. Uninstall all Internet security and virus/firewall programs and turn off the win firewall and see if it clears up.

Just turning these program off doesn't really turn them off. you have to Uninstall for them to give up restricting you.