5742Z keyboard change help needed

[johnny reggae]

Hi

Does anyone know how to remove the keyboard from a 5742Z acer aspire? I have tried various you tube vids - each seems to show a slightly different laptop to mine. Whilst there are no signs to show it, I wonder whether I need to undo screws underneath the laptop maybe ? The keyboard doesn't seem to want to be prised out. I do not have manual...

any help appreciated thanks