I have zilch understanding of internet and other gizmos. I followed various suggestions on how to get Fetchbox reconnected to WiFi. This one worked.
1. Stick a couple of Netgear Adaptors (mine came from Tipshop) onto the mains. One near the modem the other one anywhere in the house.
2> Using ethernet leads (tipshop again)...connect the modem to Netgear. Then connect the other Netgear to the Fetchbox.
3 Fetchbox screen lights up. Follow the prompts.