Odds are against this one, but I have seen it make a difference: Have you tried a new internet cable?
Also, how is her computer connected to the internet? Is it connected to a router and or a Cable/DSL modem? Make sure power to both of those are on (if they exist at her house). If she is connected to a router, try plugging into a different switch on the router. Also (still if she's on a router) can other computers connect to the internet?
Also, how is her computer connected to the internet? Is it connected to a router and or a Cable/DSL modem? Make sure power to both of those are on (if they exist at her house). If she is connected to a router, try plugging into a different switch on the router. Also (still if she's on a router) can other computers connect to the internet?