I have a 5yr old Vista Toshiba. All the laptops, phones and internet gaming systems were working fine on wifi until my son changed the encryption code on the Netgear router "to something easier". Every device except my older Vista version, hopped onto wifi with the new code. Ive been on the phone with my ISP tech support for 3 hours, and had a tech come over the next day for one hour. Believe me, I have been all over my computer in the network and settings, connect to internet areas, and checking vpn things and properties. Most of which I didn't understand but did as the tech said....then watched the second tech do the same stuff in person. My computer WILL connect if it is wired to the router. It will also connect to wifi with a different router that the tech tried. The problem is that with this"different" router (also a netgear type), the wifi connections are horrible and inconsistent. So, I switched back to my first router that my computer won't let me on to the internet with. Once again, all other electronics work fine except mine. My network and settings says local connection only and has a red X on the internet. Help!!