I cant boot my modded console?

Ok so, right now i have a modded 3ds i was playing until literally yesterday, but today it wont boot? When an sd card is incerted it just refuses, i can access Rosalina menu when i open it and at first it let me boot into gm9 (it wont anymore), i tried copying the files from one sd to another with no luck, and when i test both cards on my computer they work fine. What can i try? could a file have corrupted? Its a normal, blue og 3ds and im not sure what to do since anothe console died on me recently but this is different. Any help is welcome