i have 4 laptops in my house i can be online with three of them but when my brothers computer goes online no matter who else is online it immediately kicks everyone offline and says we have limit access on the network. we are all running windows 7 we have a linksys wrt110 router and the modem is a westell model number: b90-220030-04. i have dissabled the ipv6 both in the network and in regedit

What is the exact error message? And can you tell what program is generating it?

What if your brother and 2 others are on line, and you attempt to connect?

its not a program if his computer tries to get online it gets online for a minute then all the computer running off of wireless stop getting online when you go to the connections thing it showes that your connected but have limited access there is a yellow triangle on the signal strength thing but its not from a program we do you firefox could that have something to do with it