hello i am new to mac purchased a macbook pro from a friend and love it the front glass was cracked purchased one thru ebay and attempted to install but their was a screw that was stripped on the mother board so i stopped did not want to crack board but realized i could remove screen without tearing laptop apart began to remove screen but camera stuck to glass and pulled apart does not work now bought new camera and replaced but keep getting there is no camera connected when i try photo booth im not familiar with mac i was a pc user are there drivers to install ? or do i have to remove battery to reset camera ? camera cable seems ok please help the rookie thank you [email protected]