@Mobi @Crimliar
This is a fairly well-known, if infrequent, failure mode of YouView boxes. It’s probably a failed hard disc. Other hardware failures pretty much don’t happen, except with the early DTR-T1xxx boxes.
If you are with BT TV, a replacement box will be readily available from BT.
If not, eBay and CeX are your friends.
Those of a technical bent could pull the hard disc and look at it with a Linux distro, but are unlikely to be able to do much more than reformat it.
A reformatted disc, assuming data corruption and not hardware failure, put back into the YouView box, will be set up by the box to work again, but your recordings are gone, whatever. And could you ever trust it again?
Or you could put a new disc drive in it; get one of the same capacity or higher, makes sure it’s suitable for video use. This is relatively straightforward to do, but you have to balance the cost of this against the cost of a replacement box.
I’ve never come across a hacked YouView box; it would be quite hard to do, and what payload could it have?
*** Longtime YouView box owner, BT Broadband customer, but never a BT TV subscriber ***
