Oh no. Sounds exactly like what happened to my Xbox One X. My unit was bought from Impulse, and in just 5 months, I had encountered an issue where my Xbox One X just turned off suddenly while watching a 4K Bluray. There was nothing I could do to recover it, so I sent it back to Impulse. Then they sent it for RMA with Microsoft Singapore I think, where I had to wait around 2 months or so. Is your unit still under warranty?