Wireless router keeps showing up and disappearing againPosted: October 16, 2012
So your wireless router is “flickering” – sometimes your computer does see it and sometimes it doesn’t, with no apparent reason, erratically. You may even bring your computer next to the router, where the signal is strongest, and still it does not see it. But then again, sometimes the router suddenly shows up even if you are far away from it, where the signal is weak.
Try to switch off the automatic channel scanning of your wireless router. Let it stay on a fixed channel. Any one of them.
This may help.