The computer was in a high school classroom...it was used mainly to for slideshows on an overhead projector, so yes, other people did have access to it, although I wonder if any of the students would possess the knowledge to activate the "Power" lockout ( this was a horticulture class ). I'm fairly computer literate, and have no idea how to do this, let alone ever even having seen it before. The link you posted refers to removing both batteries...I've alredy tried removing the battery in the bottom of the computer with no results...any input on removing the batteries?