approx. 2yrs ago my husband purchased laptop for me frm one of his co-workers. then his sister(or someone in her household) got on the laptop and got into my bios setup and set a administator psswd and adm. psswd hint also and now i can't unlock mybios setup so i can enable my wireless lan. i tried to get the password tht was set frm his sister, no one wants 2 admit doing it. dell won't help me without proof of the original owner's ownership.don't have tht info anymore & can't remember. helppp...please. service tag:41b49h1 & express service code:8786270197