Having problems with your Dell Latitude C640 Notebook ?

Forgotten motherboard password of dell laptop model pp01l and system no. 7HYDT1-595B

\015 The motherboard password is forgotten and the service tag is 7HYDT01\015

Answers :

Daustie, you don't read much, do you? What betenikomila is looking for \012an answer to is the BIOS/CMOS password, not the windows pass as you \012misguidedly offered bad advice to fixing.
What is needed is to do a \012procedure called "clearing NVRAM". The nvram is the non volatile memory\012 that you computer keeps setting such as time, date, drives installed, \012and boot process. Think of it as the brains of the computer that tell \012it how to do the basic things.
The steps that follow are from Dell's \012website. PLEASE follow EXACTLY what it says, because you need to go \012inside the case & one small slip will cause your computer to become \012nothing more than a shiny doorstop. If you feel uncomfortable doing \012this, get someone that you trust to do it.

To clear NVRAM for all devices and restart the system, perform the following steps:

1. Turn off the computer and unplug it from the electrical outlet.

2. Remove the computer cover.

3. Move the jumper plug on the JPX2 jumper to pins 2 and 3 to erase all settings in System Setup at system start-up.

4. Replace the computer cover.

5. Attach the computer to the electrical outlet and turn it on.

6. After the system boots, turn it off, and unplug it from the electrical outlet.

7. Remove the computer cover.

8. Move the jumper plug on the JPX2 jumper back to pins 1 and 2.

9. Replace the computer cover.

10. Attach the computer to the electrical outlet and turn it on.

This comes from: Daustie, you don't read much, do you? What betenikomila is looking for \012an answer to is the BIOS/CMOS password, not the windows pass as you \012misguidedly offered bad advice to fixing.
What is needed is to do a \012procedure called "clearing NVRAM". The nvram is the non volatile memory\012 that you computer keeps setting such as time, date, drives installed, \012and boot process. Think of it as the brains of the computer that tell \012it how to do the basic things.
The steps that follow are from Dell's \012website. PLEASE follow EXACTLY what it says, because you need to go \012inside the case & one small slip will cause your computer to become \012nothing more than a shiny doorstop. If you feel uncomfortable doing \012this, get someone that you trust to do it.

To clear NVRAM for all devices and restart the system, perform the following steps:

1. Turn off the computer and unplug it from the electrical outlet.

2. Remove the computer cover.

3. Move the jumper plug on the JPX2 jumper to pins 2 and 3 to erase all settings in System Setup at system start-up.

4. Replace the computer cover.

5. Attach the computer to the electrical outlet and turn it on.

6. After the system boots, turn it off, and unplug it from the electrical outlet.

7. Remove the computer cover.

8. Move the jumper plug on the JPX2 jumper back to pins 1 and 2.

9. Replace the computer cover.

10. Attach the computer to the electrical outlet and turn it on.

This comes from:
http://support.dell.com/support/edocs/sy...
Shhhhhhh! Don't pass this around, but try this "backdoor" password Dell
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