A problem with the screen

Hello,
Since yesterday, my laptop has a problem with the screen. I normal use for example ,word processing or Internet browsing, when suddenly the screen went white. To “reappear" the screen, I have to move a little screen, tilting a little less. I guess it just a connection problem of the screen.
My laptop is an HP dv5.
Is it serious? Any way to fix the problem?
Thanks.
