My desktop computer and my wife's laptop both connect to the internet via homeplugs from different parts of the home to the homeplug connected to the router. I'm having no problems with my computer but my wife can no longer connect to the internet since we changed her mains plug as a result of it being damaged and over heating. Nothing esle has changed, her homeplug and LAN cable. I've tried rebooting her computer umpteen times, resetting the homeplugs and the router but I still can't get her laptop to connect to the internet. Any bright ideas please?