hi my names is jerry .. i got a dell latitude d620..tag x6jxt8hnt-595b...i got it a yard sale and i need help getting working again ... i took it a part and took the battery out for a long time... cmos well not reset .. the hard drive is lock ... if i buy a new hard drive well that work ... if you can help or know some one please help ..... thank you jerry

if the gray/white screen is asking for harddisk password only then you can get the notebook to work with a new harddisk drive.
if it asks for the system or admin password you can go here:
http://www.techspot.com/vb/topic96268.html
and wait for password or contact dell (make sure you are the legal owner or have the ownership tranfered to you).
if the BIOS setup configuration (which allows you to change the settings in the bios) is disable post back. I can help you with that.

good luck!