Password assistance is not offered on these forums as there is too much potential for abuse. You will need to contact the PC vendor, someone at your company's IT department, or Microsoft for assistance.
Re-install windows. Sorry but by rules we can't help you such as by pass previous user accounts. As we have had to many theifts post here on how to get the stuff off the real owners computer such as Identity info, Credit card info. any financial info... etc
Password assistance is not offered on these forums as there is too much potential for abuse. You will need to contact the PC vendor, someone at your company's IT department, or Microsoft for assistance.