cancel
frantstehnik Honor Student
Honor Student
2 1 0 1
Message 1 of 3
40,432
Flag Post
HP Recommended

HP EliteBook 840 G2 bios password reset

HP EliteBook 840 G2
Microsoft Windows 7 (64-bit)

Good afternoon. I had a problem. My nephew set an administrator password to enter the BIOS and can not remember it.
I do probyval restore BIOS from a USB device, but nothing has changed. I took off the cover and disconnect the battery with the BIOS on the day, and also did not get the result.
The forum is a response to a password reset the BIOS on the HP Elitebook and Probook, but unfortunately my model is not listed there, and I was not able to do what I need.
Tell me how can this be done?

2 REPLIES 2
Regents Professor
Regents Professor
4,243 4,159 562 1,256
Message 2 of 3
40,398
Flag Post
HP Recommended

HP EliteBook 840 G2 bios password reset

Hello frantstehnik,

 

Welcome to FORUM !!

 

There is no master password or generator for EliteBooks or ProBooks.

 

HP Business Notebooks such as Probooks  or Elitebooks have more stringent security than consumer models infact they don't produce 'halt codes', the password cannot be derived from the Serial Number and the code is stored in non-volatile memory so removing the RTC cell will not reset the password in this case.

 

  1. Please have a look at this link. 

http://forums.mydigitallife.info/threads/49497-HP-Probook-Elitebook-BIOS-Password-Reset-Utility

 

  1. Replace the BIOS chip

http://www.ebay.com/itm/HP-Elitebook-8470p-8470w-8570p-8570w-8770w-Programmed-Bios-Chip-No-Password-...

 

  1. Please Contact HP Business Notebook support they should be able to send you a customized SMC.bin file which you can use at boot to reset the password.

 

When talking to the HP rep ask them to escalate your service request.

 

 

1.Save smc.bin you`ve got  from HP support  to the root of a USB thumb drive “(or save the file to the root of drive 😧 HP_TOOLS)” -- I used a USB drive, btw...

  1. Power the laptop off
  2. Hold down Windows key + up arrow + down arrow and power the laptop on
  3. Let go of the keys at the HP splashscreen
  4. Press F10 repeatedly at the screen that shows up with "SMC command handled successfully"
  5. This should bring you into the BIOS where you need to choose “Reset BIOS security to factory default” and confirm by choosing yes
  6. Exit the BIOS, saving changes
  7. When the laptop reboots, you will see the coveted prompt to clear the TPM, which is shown below.
  8. Press F1
  9. When the laptop reboots, the BIOS password is gone

 

 

Hope this helps, for any further queries reply to the post and feel free to join us again !!

 

 **Click the White Thumbs Up Button on the right to say Thanks**

Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

 

Thank You,

GBL84

I am not an HP Employee 

frantstehnik Honor Student
Honor Student
2 1 0 1
Message 3 of 3
40,385
Flag Post
HP Recommended

HP EliteBook 840 G2 bios password reset

I did not understand it the action to perform if I need to change the BIOS chip? Or replacement BIOS is a single solution to the problem?

 

  1. Please Contact HP Business Notebook support they should be able to send you a customized SMC.bin file which you can use at boot to reset the password.

 

When talking to the HP rep ask them to escalate your service request.

 

 

1.Save smc.bin you`ve got  from HP support  to the root of a USB thumb drive “(or save the file to the root of drive 😧 HP_TOOLS)” -- I used a USB drive, btw...

  1. Power the laptop off
  2. Hold down Windows key + up arrow + down arrow and power the laptop on
  3. Let go of the keys at the HP splashscreen
  4. Press F10 repeatedly at the screen that shows up with "SMC command handled successfully"
  5. This should bring you into the BIOS where you need to choose “Reset BIOS security to factory default” and confirm by choosing yes
  6. Exit the BIOS, saving changes
  7. When the laptop reboots, you will see the coveted prompt to clear the TPM, which is shown below.
  8. Press F1
  9. When the laptop reboots, the BIOS password is gone
† The opinions expressed above are the personal opinions of the authors, not of HP. By using this site, you accept the Terms of Use and Rules of Participation