Hello, I have been asked to replace a HDD in a dc7700sff box. but I am unable to figure out how the damn case opens. looking at the case 'lid' it can't slide back then off because of the design, however, there are two buttons, one either side to the front and I assume that they need to be depressed to allow the lid to tilt up. anyway, I tried every non-destructive idea I can think of so short of using a gas axe to pop the top, I am appealing for ideas. thanks.