I have a wireless usb adapter that connects to a router, or at least it used to. recently i cant even view available wireless networks and my adapter when i click on the icon to check to see whats going on with it, nothing comes up. I looked in the device manager and sometimes my adapter shows up and sometimes it doesn't. When it does show up it has a yellow Circe with a ! in it which is not good. I know there is an available network to connect to but how can i connect to it......I just want my internet back.