MM off over holiday, now boots but just black screen, can't access anything

[Paulc3]

Good day,

I built my magic mirror a few month’s ago and was all working fine.

I’ve been away on holiday with the device shut down, however when I plug it in, it boots, I see the beginning screens for the magic mirror but then it goes blank.

Nothing on the screen, ALT and any other keys etc have no effect, it looks like it reboots but blank again.

I tried putting the flash card into my computer but I can’t see any folders mentioning the magic mirror despite the mirror showing this at the initial stage.

Any advice please, would I need to re-install/format, I don’t see any errors from what I can tell…

Thanks in advance,

Paul