Question about Dell Latitude C640 Notebook

1 Answer

Laptop I bought a motherboard from someone and I cannot change the time in the Bios because there is admin password how do I clear that password. password

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Dell Master
  • 4,806 Answers

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


Posted on Dec 13, 2008


2 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 72 Answers

SOURCE: 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.

Posted on Feb 16, 2008

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How do you get the bios password ?

Well, a BIOS password can be removed by either clearing the CMOS jumper or removing the CMOS battery on the motherboard.

On a regular computer this isn't too difficult, but unless you have taken apart your laptop before or are willing to try it, I would take it to someone you trust to work on your computer. Clearing the CMOS of a laptop generally requires near complete disassembly.

Oct 24, 2012 | Toshiba A665-S5170 Laptop i3 2.53GHz 4GB...

3 Answers

Cant log into laptop with my amidd password

if you are getting prompt, "This computer <Service tag number>-595B is password protected ..... you'll need to call Dell technical support to get the master password generated to clear the message. There is no hardware way to clear the password short of replacing the motherboard. Same applies for a BIOS level Hard Drive Password.

Dec 04, 2011 | Dell Inspiron 6000 Notebook

1 Answer

I need to reset the admin bios password on my dell Latitude D430 laptop. Removing the battery does not work...the screen code is 250R43J-595B. Please can someone help? I know there is a converter...

As a laptop repair tech I use when I need to clear a Dell bios password. They charge $20 and guarantee it to work or your money back. Use them couple times a month and they always come through.

Aug 03, 2011 | Dell Latitude D430 Notebook

6 Answers

I forgot my BIOS password and i can't access it becos i don't know the password.

HP Spare Key can be used to reset BIOS password. It is provided by HP Corporation. So when you forgot BIOS password on HP computer, just download it and get perfect BIOS password reset.
How to reset HP bios password with Spare Key or other ways?

Please refer to reset HP Elitebook password. In this passage, you also can learn how to reset Windows administrator password easily.

Jun 12, 2011 | HP Compaq 6730s Notebook

1 Answer

Cannot clear bios password

Hi, you won't be able to, Dell has put it there to stop people from messing with the bios.
You can phone Dell and they may tell you the password, but you will have to go through some security check to prove that the laptop is yours.

If you know how to take your laptop apart ( not recommended ) you can follw this guide :-

Disconnecting the battery for a few minutes should clear the bios and return to default settings.

Let me know if this has helped you.

Regards - Anthony

Feb 08, 2010 | Dell Latitude C610 Notebook

3 Answers

How to clear BIOS password on ACER Travelmate 5720 Laptop


Mar 15, 2009 | Acer Aspire 5100 Notebook

2 Answers

User Password

For this issue I have had myself. First and foremost the best solution is to flash the notebook, clear EVERYTHING out, most tech. support locations are able to this, with no problem, OR you may also try, f you can get into the BIOS, there should be an option to "Load Defaults". Choose that and then "Save and Exit". If you cannot get into the BIOS because you do not know the password, look for a jumper on the motherboard marked "Pass", "PWD", "BIOS", etc. Typically you should move the jumper over one pin, or it may have just two pins, and they need a shorting jumper on them. Do that for a few seconds, and replace it as you found it. That should clear the password, and perhaps all other non-default settings, as well.
Let me know how it goes,
Please Rate Me

Jan 15, 2009 | Toshiba Satellite 1415-S173 Notebook

2 Answers

Bios password

if you know the password, then when you go to change it instead of entering a new password just press enter on the keyboard. If you don't know the password try, admin or administration or even the word password.

Oct 30, 2008 | Acer Aspire 5520-5908 Notebook

2 Answers

Acer ASPIRE 4720z laptop

sorry to tell you that you will need to reinstall windows.

thats the only way


Jul 29, 2008 | Acer Aspire 9300 Notebook

1 Answer


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

Not finding what you are looking for?
Dell Latitude C640 Notebook Logo

93 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dell Computers & Internet Experts

Les Dickinson
Les Dickinson

Level 3 Expert

18424 Answers

Alun Cox

Level 3 Expert

2678 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Are you a Dell Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides