Please someone solve my problem

Hello,

Plz help me . i am in very big trouble
i locked my one drive by using folder lock profissional just for chek but when i tried again for unprotecting now nothing was come back
in my tha drive i have a 120gb data
i removed the folder lock but it was not solved the i reinstall my windows by formating c but still problem has not solved please help me
when i check my drive storage its still showing 120gb used but drive is empty .
some one tell me how i find again my data