I have a Zyxel X-550 wireless router I've been using a couple of years with success. A while back my sons PC started having issues connecting. I thought it was a range issue and converted him to powerline networking. A couple of weeks ago the power line networking stopped working also. I assumed one of the inexpensive devices failed even though they show link and activity.
So I took another look at using wireless on my sons PC. It can not connect just keeps scanning. Looks like it sees the router connects and then is immediately dropped. I tried a USB network adapter to see if the card in his PC was bad. This displays the exact same symptoms.
Last night I had the same thing happen with my laptop from work and now can't connect with it anymore. In the logs of both machines there are constant messages from tcpip as the source showing the card connecting and then disconnecting over and over. Both machines are running XP SP 3.
The strange thing is my daughter can still connect as can a Roku device.
Any ideas? Is the router going bad? If that is the case why not for all devices?