Have issue when using Firefox where my PC internet connection gets disconnected. Running troubleshooting I get "The default gateway is not available" and to resolve it has to reset the network adapter. It occurs regardless if using internal Intel Centrino wireless N 6150 or external TP-link wireless Nano USB Adapter. The trigger is larger data upload... such as running a speed test or on a video meeting. Does not occur while using Chrome on same PC. This PC is running a older Windows 7 OS that I am aware is no longer supported. I am wondering if someone has ever come across this issue and know if there is a fix?