Internet Connection Problem

So, all of the sudden, I can't connect to the internet using Windows XP. I've trying resetting the router and all the typical hardware stuff, but it still acknowledges that there's an ethernet cable plugged in and I can still connect using my Linux partition, so it must be a purely software problem. I have no idea why this is happening, there's no virus or anything.

Does anyone know if there's a way I can just set it to default or something? I can post my ipconfig stats if that will help.

shit sage sux fail