Question about Dell Latitude C640 Notebook

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Please help me. I have forgetten the motherboard password for dell laptop model pp01l and service Tag is 7HYDT01

Service Tag is 7HYDT01

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Hello, you need to reset CMOS. Download this: Click here

Posted on Sep 13, 2008

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Sir i have DELL LAPTOP I HAVE NO ANY PASSWORD DISPLAY SHOW FOLLOWING SERVICE TAG : #9R1ZM1J-595B MODEL : D505 BIOS REV. : A09


If you call Dell (310-DELL) with the service tag number, once they verify that you are the legitimate owner of the unit, they can generate a password to unlock the unit using the service tag number.

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You can download the drivers from Dell WEB site, thesupport download page. Make sure you select your model desktop or laptop,better still, type in the Service Tag number, it is printed on the label on thebottom of the laptop and on the back or sides of a desktop. (If the Service Taglabel is missing then go into the BIOS setting and on one of the BIOS pages,the Service Tag number will be displayed). This will open the page where thespecific drivers for your model computer are located. Also make sure you selectthe Windows XP or Vista version of the drivers for your Windows operatingsystem. Click on this link to download the drivers: - http://support.dell.com/support/downloads/index.aspx?c=us&l=en&s=gen

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I am afraid that such kind off issues could only be solved by motherboard replacement, unless you can contact your laptop's manufacturer support with a proof of ownership of this notebook.

There is also this service which can help you crack the BIOS password:
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Dell latitude d630 admin password i forget it


This is a very complicated situation!

If you are the first owner off the laptop you can just call them att your local dell help centre.
under your laptop you have a "SERVICE TAG"
This is your laptops serialnumber.
Dell uses that serialnumber to see if u are the first legit owner to the computer.
if u are the legit owner they will send u a
MASTER PASSWORD!
This is to prevent access to stolen laptops.
The password that many people call "BIOS PASSWORD" is not located in bios at all on dell laptops.
The password is stored in a IC called EEPROM
it is located under the motherboard and is soldered in place.
to manipulate the eeprom is not for beginners,
but it is possible to shortcircuit the EEPROM to
get it in "factory reset" mode

This is my solution! Please vote!

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Remove the CMOS battery from the motherboard.

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Dell Inspiron BIOS Password Recovery
Each Dell Inspiron has a master password which will clear the BIOS password. You can get this number by calling Dell Technical Support at (800)624-9896.
Dell Technical Support will request the Service Tag and Express Service Code from the bottom of your Inspiron.
If you were not the original owner of the Inspiron, Dell will transfer registration of the used Inspiron from the original owner with only the Service Tag and Express Service Code from the tag on the laptop.
To transfer the registration of a used Dell Inspiron, fill out the Transfer of Ownership form on Dell's web site.

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