I have a weird wifi issue I cant figure out. I even have problems how to explain it, but I will give it a try..:
I have a stationary connected with USB wifi stick.
It worked instantly and perfectly for several weeks, then suddenly it stopped working properly. First I had problems getting it connected with internet connection. Would just say connected, but no internet access. After that I had no problems getting it connected where it said "internet access", but I still didt have internet connection. It would appear as connected, but when trying to load a webpage it would disconnect and the router dissapear from the list of networks availeble.
I flashed the computer back in time, where the wifi worked, but with no difference. I have tried reinstalling drivers etc etc several times, with no difference. Yes I have tried all USB ports.
When opening a new wifi network by using my cell phone as a router the USB Wifi works perfectly. So it would seem it was a problem with the router.. The only thing is, I have several other items conected to the router it wont function with, and they all work fine.
I have now bought a new USB wifi adapter (of another brand), and it has 95% of the same issues. It may load websites sometimes, but is very slow and unstable. So unstable it is useless. May stay connected for about a second, or even 30 seconds (but with slow connection), then be disconnected for a few hours. Impossible to load any website even though it says connected with internet access.