[Q] I need Mediapad 7 S301u original stock ROM topic

Dear all, i'm really need your guys help... i'm installed Modded ROM on my mediapad 7, without any stock ROM on it. Because i formated my stock ROM through CWM. and the problem is everytime i open my gallery, the phone always restarted. Do anybody here have solution for this? or anybody have original stock ROM so i can flash it back to original?

Thanks for your help