My computer is a Toshiba Sattelite o/s win 7. My wi fi signal is excellent, yet my signal keeps dropping or saying limited access. I have tried resetting the router and resetting my default windows settings on the computer. All other lap tops and wireless devices in the house do not have an issue. I discovered the other day as long as the laptop ( not the router) is plugged in and not running on batter power that i do not have a problem staying connected. For fun i wondered if it had something to do with the power cord making some kind of connection when plugged into the lap top, (since everything is more compact in them) I tried having the power cord plugged into the lap top but not into a power source but I still lost signal. Any suggestions?