Dell insparion 15, 3000 series Blank screen

Hello,

I am also having the same problem with my screen. Two days ago my daughter touched something and everything went balck. I tried to restore the system to a month back, but the screen went blank and it never came back. I have Dell insparion 15, 3000 series. I hope some one who is computer savey will help me fix this problem. I had this laptop only for a year and half. I have very important documents that i dont want to lose. Please help