My daughter has a desk top computer (running XP Home)where e-mail can be recieved and sent but Internet Explorer returns "Server not found" most of the time, but occasionally connects. Blueyonder said it was a problem with Internet Explorer so I installed Firefox,which made no difference. Using a laptop connected to the cable modem the internet can be accessed without any problem. I've tried System Restore (no change) then I tried to do a repair using the Windows XP disc but couldn't as it kept asking for the administrator password. There never has been an administrator password on this computer. Next step was to run WinsockXPfix.exe which got the desk top back on line once and never again since!
Has anyone got any idea what I could try next other than wiping the hard drive and reinstalling?