My dad got prompted for an Abode flash upgrade, turns out it was some kind of virus that put a bunch of crap on his computer. He managed to get most of it off but now he cannot connect through Internet explorer or chrome, says proxy server error. I went into Internet options and changed the proxy server settings but it keeps switching back on. I think there is something left over from the virus that is preventing him from changing the settings. Can someone help? I have gone through several google results and can't seem to find anything that has helped. His email client is functioning so he is connected to the net.