Home WiFi question?

I have a virgin media super hub in my living room however I want a way of connecting my PC and Xbox one via Ethernet. Running cables up the stairs isn t an option and i was wondering what I could do. Do i buy a WiFi extender or can I buy a router and connect it to my virgin media hub? any help is appreciated.
Update: I have a cheap WiFi dongle in my PC for the meantime however I want a wired solution or something overall better
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