mobile

Hi, a little background first. My phone is s-Off, bootloader is unlocked and I have a been running rooted custom roms since day 1 that I had this phone. I always ran good except that 2 months ago it started rebooting for no reason. I change my rom from InsertCoin to LeeDroid thinking that my help but no change. Now, yesterday was phone rebooted in the middle of playing a YouTube video right into safe mode asking for a password to Decrypt storage which I never encrypted.

I found a few threads about it. Here's what I tried:
- wipe user data: tried that with fastboot erase userdata and also fastboot format userdata, both failed.
- I went into TWRP to wipe data, said it ran successfully but it didn't since all my pictures and other personal files.
- I tried restoring a known working backup I had and it failed too
- fastboot oem lock fails
- fastboot rebootruu reboots in a blackscreen (no HTC logo in the background) then completely reboots back in safemode.

Any idea what I should try next?

Thanks a lot