Greetings!   Help with Dongle reception, please.   I have a PC mit dongle 5m from the router but 2 thick stone walls in between - connection very intermittent.   Grandson has X-Box same distance, same 2 walls - connection permanent and excellent.   Wife has Kindle 7m from router, same 2 thick walls in between - connection permanent and excellent.   Question:   could my PC dongle be inadequate?   Additional info:   I'm an original dinosaur.

Ed