An good computer, drop, keep, buy new one?

Hello there,
My name is Alexander and I got some problems. I bought a new Windows Vista laptop two weeks ago. I was so excited that I finally bought it. I pick it up from the store and put it in my apartment. Then I was so happy finally opening it. But when I did open it, I found out, my laptop won't turn on. I was so afraid. I just bought it and it was broken already!
I got really cranky and started to go insane. Till when I tried turning it on again pressing the button of the laptop, it shows me a white screen. The whole screen was in white color. It was crazy. So someone can help me? I would really would like some help. I've bought so many laptops from this store and they all worked, now I am just so disappointed and mad about this case. Please do help me.
Thanks.
Alexander
