Dell latitude password bios forgotten

Try following the instructions on this page: http://forums.mydigitallife.info/threads/43628-FAQ-(forgotten)-Dell-BIOS-Password

Here's a link to the Dell support article you need to try...
Knowledge Base

How to reset The Latitude C640 Bios password?!

1.First flip your laptop over and remove the battery, as well as any cables connected to the laptop.
2.Remove the screw latched into the memory panel on the bottom of the computer found near the rear.
3.Lift the panel off and expose the memory modules.
4.Seek for a small push-button and press it, holding it for about two seconds. Reassemble your laptop and start it up.

Thank You!

If you know how to dissemble your computer and are comfortable with it, open it and remove the CMOS battery, wait about 10 minutes, put it back and turn on your machine. All BIOS settings should have been restores to factory defaults, including passwords. Hope this is helpful.

boot to the BIOS, go to the HDD password, select change, enter the old password, leave the new one blank.

If you don't know the password then is it a call to Dell to get the master password

http://www.fixya.com/support/r3656360-dell_portable_computer_bios_hard_drive

• Just remove the BIOS battery from your system.
• Then reinsert the battery.
• Password of BIOS will be reset.
• That is the way to reset the password.

-rate if it helped you.

If it is a BIOS or a HDD password, then there is no universal default password and you will need to contact Dell details here:
http://www.fixya.com/support/r3656360-dell_portable_computer_bios_hard_drive
Since it is a Latitude C Series, it has lifetime free phone support from Dell
If it is a windows password
http://www.fixya.com/support/r3743393-ve_lost_or_forgotten_windows_password

why you want to remove the bios password? if you own the laptop and forgot the passowrd you can contact Dell support site

hi,
check if any updates are availble for the bios
go to support.dell.com > drivers and downloads > put in your service tag and check if any update is available you can update your bios

you can also try restore your bios to factory settings you have an option for this in the bios menu as well and then connect the drive and then boot.

Further Queries are welcome
if you think my solution was helpfull please do rate me

It looks like Dell is pretty tight with this info. They want you to contact their tech support in one of these ways:

http://support.dell.com/support/topics/global.aspx/support/dellcare/contact_technical_support?c=us&l=en&s=gen

Before doing that though, I'd remove all power, unplug the CMOS battery and let it sit for a while before hooking the battery back up, applying power and see what happens.