[NAME]  Never post your Service Tag in an open forum like this. Treat your Service Tag as private info, and only share it with Dell-Cares by Private Message through this forum, if they ask for it. Wouldn't be much point having a password, if it was easy to reset it. Otherwise, anybody could change the PW and be able to see everything on your PC... Are you sure a Windows password was actually set? Was Windows set up using a Microsoft account? In this case, it should be the same password used for that account. Replacing the battery on an Inspiron 3252. 
My son forgot the Password to star the lap. "To reset password Connect a USB flash Drive" I read in the scream.  My question: What is it and where I can get one.? The computer is not used for 3 years.
Reset password.