White screen on Brand New 8900

Hey Everybody!
I really need some help here with my Brand new BB 8900. I bought this unit from a girl on Craigslist. It was in brand new sealed box. When I opened it and tried to put a battery in it gave nothing but white, blank screen that wont go away. I tried to update the software trough Desktop Manager but no luck. T-mobile Cus. Support said they also cant exchange since I do not have a warranty for it. Please advice. I'm pretty sure there should be a way to fix it.
Thanks a lot in advance!
I also tried to remove the battery for a while and put it back in..but still no luck!