It is a general forum policy against answering questions(and even asking maybe) of password recovery. This is a just in case measure.
Best bet is to contact Acer(http://support.acer.com/us/en/default.aspx)
about this because I do not think you will be able to get too much help for that here.
I think the above poster was a bit harsh after all mistakes do happen. I could see a inexperienced user locking them self out.
Sorry to not have the answer you need.