I have been having this problem for a few days now. I have a iB-WRB300N router. My laptop which is connection to the router frequently loses access to internet while I can use the same WiFi connection without a problem at the same time. Note that the laptop doesn't lose connection with WiFi router but just the internet connection. This happens for about 20-40 seconds in every few minutes and then everything gets back to normal. I use Windows 10 on my laptop. Please someone help if you can as this is annoying me very much.