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Bios startup password

How to reset The Latitude C640 Bios password?!

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Remove the cmos battery from motherboard once and then start.

Posted on Feb 11, 2014

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Remove or reset dell latitude c640 bios password


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!

Feb 01, 2011 | Dell LATITUDE C640, P4...

1 Answer

Bios locked out


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.

May 16, 2010 | Dell Latitude D600 Notebook

1 Answer

Latitude c640, how do i cancel the hard drive password?


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

May 15, 2010 | Dell Latitude C640 Notebook

1 Answer

What would the default password be as my dell latitude c640 is now asking for one after it crashed


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

Jan 26, 2010 | Dell Latitude C640 Notebook

1 Answer

Hi guy plz help me i got a dell latitude C640 and its not willing to detect my cd drive. after loading bios its telling me the device in the modular bay cannot be recognised and its not booting into...


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

Mar 28, 2009 | Dell Latitude C640 Notebook

1 Answer

Unlock password protected Dell C640


If it is a passwd set in the bios...good luck. You may have to download a disc from techspot.com
If it is a windows passwd after the dell splach screen tap F8 this brings up the Advanced Startup Menu. Select safe mode and log in as the administrator. From there you can remove or change the password for all accounts. If there was never an account setup on that laptop and the Administrator account is being used then you will need a disk fron techspot.com to retrieve that password.

Mar 22, 2009 | Dell Latitude C640 Notebook

2 Answers

LOST PASSWORD


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.

Dec 30, 2008 | Dell Latitude C640 Notebook

1 Answer

Laptop


clear the cmos, or remove the battery for a few minutes, that will clear any bios password

regards

Dec 13, 2008 | Dell Latitude C640 Notebook

1 Answer

Laptop


remove the battery and remove the bios. reinsert the bios and battery if that dont work there is jumbers on the board you have to remove check your motherboardsmanual online.

Feb 16, 2008 | Dell Latitude C640 Notebook

2 Answers

Dell latitude password bios forgotten


Hi, The only way for that is to contact dell support. you're gonna need help from a level 2 tech from austin as they're the only one who has the master password for that.

Oct 03, 2007 | Dell Latitude C640 Notebook

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