hello meghana.....

you can ofcourse check your nseb marks in the result published website on their homepage or from other by websites who have published the result on their websites too..

if you have lost your roll number, on the homepage of the nseb website you wiill be having an options for them who have forgotten the password , roll number and other details. you can go to that page and click the link given there, then follow their instructions. they will be asking you other relevent information which you will need to provide them. they will be providing your roll number.

if that doesnt work you can contact their exam helpline numbers which is also provided in their website,

hope the information helps you...

all the best....