evidently dencorso's crystall ball needs to be completely overhauled as unlike mine (which needing some fine tuning could not see details as I was expecting) his one provides WRONG details. Yes , seemingly the one in the top left corner is a screw holding the hard disk in place. If you post the actual laptop model, possibly a better photo and disassembling instructions can be found. jaclaz i just did that and pulled it out now the laptops on and it isnt booting with clicking noises or slowly