Can anyone advise me how what the correct method of disassembling an AJP 8640 laptop case should be? I need to replace a cooling fan for the HDD and can get all the underneath screws out without any drama except for one which appears to be retaining that section of the case from the opposite (top) side and underneath the keyboard. I can also see two more screws on the top side above the keyboard & partially obscured by the screen which look as though they will have to come out at some stage. There aren't any other screws topside that are obvious. I'm don't know what make/model the 8640 is a clone of either. Cheers, G.