I Got my Samsung C7 Mobile restored Itself

[ammorak]

Today at morning I put my mobile on charge with Wi-Fi on I slept for 3 hours . when I woke up I check my mobile it was off when I turned it on I Got restored setting like when I have newly opened my mobile . i went through the accounts and language setting when I saw the gallery and my sd card it was totally wipe out there was no data I lost my all pics videos and almost every thing .
. please help me why this happened

 

[B. Diddy]

Welcome to Android Central! It sounds like the phone went through a spontaneous factory data reset, which is rare but does seem to happen from time to time -- likely due to some catastrophic firmware glitch. It doesn't quite explain why photos saved on the SD card would be wiped out as well, since the SD card shouldn't be affected by a factory reset. If you remove the card and insert it into a PC, can the PC find those photos?