Help me reapir my laptop

Hello, my name is mike. i need step by step directions on how to repair my laptop. heres what happens when i turn it on.
.goes to a dark screen with white lettering while i wait for windows to load.
.goes to windows loading bar
.goes to a blue screen that says 'A problem has been detected and Windows has been shut down to prevent damage to your computer.
-----I have a essay due 2 morrow and i need help on how to repair my computer. Please give me steps on how to repair my computer. -mike