I have a the late 2009 unibody white MacBook and it seams to be making constant click noises when in clamshell mode! i have the laptop on a griffin elevator stand, but when it is closed on clamshell mode, it seams to be making these noises. I am not sure why, when i open the lid and just extend the displays, the clicking noise goes!

Could anyone possibly help me with my problem ?

Thank you!
Dan Thomas