Cannot go online after installing SP2
Hello, my friend just recently installed SP2 on his computer... but for some odd reason, after installing SP2, all internet activities on his computer no longer works. He is on a router with his brother and his brother's computer can go online... However, his own computer cannot at all.. I've already told him to turn off his firewall but it didn't fix the problem...
he can't even surf the web with IE. does anyone know how to fix? Please respond fast!! urgent!!