I am having an issue now with connecting to wifi once I leave a room. It is perfectly fine in the room with the router in and has always been good using it in other rooms and garage up until now. It is not the router as I have changed it and I can also use other laptops and tablets with no problem anywhere in the house. Does the card need replacing or should I (or can I) upgrade it. My laptop is an inspiron 5558.

Thank you