@Sophiekenwo
Plug the box into a different power socket, preferably on another floor of the house to confirm the problem (perhaps also try a lamp in the original socket)
If that proves it's the Hub or Hub power supply which has failed then you'll need to.log a fault with Sky and wait for a replacement to be shipped to you: realistically that's not going to arrive for a few days.
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Sky Glass 55" (on ethernet) & two Stream Pucks (one ethernet / one WiFi)
BT Halo 3+ Ultrafast FTTP (500Mbs), BT Smart Hub 2
