Phillips bdp3000 blu-ray

hi, i’m sort of new to this forum business but wondered if anybody knew why my blu-ray player’s saying unknown disk?:sad:has my 3 year old changed the region some how?

i have the phillips bd3000 blu-ray player and it has started saying “unknown disk” for every disk i try to play - evenones which previously did play. - is there any way my son could have changed the region only i can’t find anything any where not even a version No?? if any body could help i would really appreciate it, my little lad’s been waiting since christmas to play his toy story box set!!