Good morning Calomax,
Welcome to the forum. Which Model have you got? If it’s the old 1000s, it has problems with hard drive sata interface with motherboard. If it is the 1000S model, it may need to be repaired.
You mention recording schedule (Planned recordings) are lost, this is normal when you retune/reset unit. But recordings are kept on hard drive & should still always still be assessable, unless there is a fault with unit as mentioned above. John L