My laptop wont turn on correctly and wont go

Hello, well my latitude dell laptop, played up today. i turned it on and nothing happened, except that it froze, so i decided o take the battery out. so i did that and turned it back on again, then it had the dell logo thing and came up with white words saying that windows wont start and i can choose enter to fix the problems or choose another option. so i just chose enter and it came up with everything enlarged and my login picture and name weren't there it was just the blue background with the pattern on it. thats as far as i can get i dont no what i am doing or who to contact as this is a school laptop.