I have an XP machine on a small home network that is wpa2 protected.. There are a total of five PCs of various types that are all working just fine, but for some reason one of the 'original' group has stopped working. I can connect to a nearby 'open' network with no difficulty.
I have tried the 'netsh ip reset' to no avail. IPCONFIG/renew returns 'Media not Available' or similar.