droid 3 touch screen problems?

[nener]

I bout a used droid 3 and I got it rooted and everytime I close or open my keyboard the touch screen either stops working for a bit or until I pull out the battery 3 times. As of right now I'm using the keyboard aaaaand I just closed it and the screen didn't work. I was wondering if its the root that messed it up or if I need a new digitizer