Hi, at this point the most useful test is to confirm whether the card itself is failing.
Please test the RX 9060 XT in another desktop PC, or test another known-working GPU in this PC.
If the RX 9060 XT still shows Code 43 in another PC, it is very likely a hardware/firmware issue with the card, and you should contact the GPU manufacturer or seller for warranty/RMA.
If another GPU works normally in this PC, that also points back to the RX 9060 XT rather than Windows.