I am in the process of replacing bad capacitors on the HP vs17x. I have removed all the screws from the top of the circuit board but there is still a whitish colored piece of plastic in the corner that connects the circuit board to the casing. How can I safely remove this and put it in place when I'm done? Also if there is anything I should know before proceeding, I would appreciate that information also. I don't have much experience in repairing hardware but this seems to be a relatively easy fix.