Acer Aspire 4730z admin password help?


Oct 20, 2012
I bought a used computer from a shop and whoever they got it from set an admin password. I cant access alot of things on the computer anf I cant even download abode reader because I need the administration password. Is there a way I can reset the password? I tried making a password reset disk but when I went to reset it I would recieve an error message. Idont have money to buy any disks or a new computer and I had planned on using it for school. Is there a way to rest admin password? Any help would be great. Thanks.