10 points.PLEASE HELP! WHY isnt MY SAMSUNG MONITOR NOT displaying ANYTHING?

[hollywoodstar]

well, the screen of my laptop(HPvista) is cracked so u can only see half of it.. so i use a separate monitor (samsung).. it worked fine until yesterday i turned it on, and it didnt work... it still has the power.. because the power switch is lit up.. but its not displaying anything..

this happend once before, but i just un plugged it, then plugged it in again.. it worked fine.. but ive tried that literally 100 times! and its not working... i dont think its broken.. it is always on my desk.. its just that its just blank.. nothing is showing up on the monitor!

its really hard 4 me 2 do schoolwork now , i am online homeschooled.. i can only see half the screen... ]
i really need ur help.. thanks guys=)

oh and the plugs are all put in properly and they arent loose

[coach]

Make sure the output display is properly set in the display properties. You can have it to the Laptop only, external source only or both.

[BillLumbergh]

Um...you say it's cracked, why not replace it? Duh it's broken! And you can only see half of the screen? I wouldn't call that "not broken." Please fix it. I'm sorry but that's the only way to fix the problem.