hp 450 g7 password

[kubat]

Re: hp 450 g7 password

Hello! Help me please. I saved dump both bioses incorrectly and now I don't have the original bios (they have them but they are corrupted, I will add them to the message). Can you give me both any perfectly working bios with cleared MPMs? Or fix my original bios with password clearing?

[Throwaway900]

Re: hp 450 g7 password

Anyone maybe able to help me take a look at my bios one more time?

[Vesko356]

Re: hp 450 g7 password

in config.txt i saw MPM mode on lock, should I unlock it and proceed?

You can try yes, but I don't think it will work out. Your bios should be modified first to activate MPM mode, and then you will be able to make changes with the BCU. I'm talking about disabling Absolute if that's your goal.

[ogre4273]

Re: hp 450 g7 password

I do not think so. But in order to succeed in what you are aiming for, the machine must be in mpm active mode.

in config.txt i saw MPM mode on lock, should I unlock it and proceed?

[Vesko356]

Re: hp 450 g7 password

@Vesko356

Can I brick my laptop if I do this? Btw, I successfully obtained the config for my laptop and did what you mentioned. I'm having second thoughts as to setting the config because I was worried I might brick my pc. Thanks

I do not think so. But in order to succeed in what you are aiming for, the machine must be in mpm active mode.

[ogre4273]

Re: hp 450 g7 password

You can try setting both "Permanent Disable Absolute Persistence Module Set Once" to "Yes" and "Absolute Persistence Module Current State" to "Inactive" at once via BCU then restart and enter the bios to see if it's changes, just go ahead and experiment with different options, if something go wrong you can always reflash Winbond chip and start all over.


Yes.

@Vesko356

Can I brick my laptop if I do this? Btw, I successfully obtained the config for my laptop and did what you mentioned. I'm having second thoughts as to setting the config because I was worried I might brick my pc. Thanks

[Throwaway900]

Re: hp 450 g7 password

Didn't realize I can't edit replies. I reflashed the original BIOS and EC, and laptop boots again but with the error same as before(as i would expect).

Ugh

[Throwaway900]

Re: hp 450 g7 password

There's a tool from HP called "BIOS Configuration Utility" (BCU), you can find a lot of videos on Youtube for it.

Hi, just letting you know I flashed both your files and the laptop now won't boot, the numlock and caps lock flash occasionally and the wireless/micmute stay lit. it will powercycle every 15-30 seconds and repeat. I haven't flashed back the originals yet but both chips verified with your flashes

[Throwaway900]

Re: hp 450 g7 password

There's a tool from HP called "BIOS Configuration Utility" (BCU), you can find a lot of videos on Youtube for it.

Thankyou very much again!

[hardware1]

Re: hp 450 g7 password

I will try this Monday or Tuesday. What is the best way for me to fill in the DMI? Thanks for the speedy response!

There's a tool from HP called "BIOS Configuration Utility" (BCU), you can find a lot of videos on Youtube for it.

[Throwaway900]

Re: hp 450 g7 password

Here's your Unlocked BIOS, Program both files together. In the first boot go to BIOS Menu and disable security options (Default).
You must fill your DMI manually.

I will try this Monday or Tuesday. What is the best way for me to fill in the DMI? Thanks for the speedy response!

[hardware1]

Re: hp 450 g7 password

Hi. I was following what people said here and tried unlocking some HP's. So I ran into a problem with one of the laptops, a Probook 450 G7. I thought everyone said it has a 32mb and a 16mb SPI and to onlydo the 16, so I found a chip(25B127DSIG) that was 16MB, I backed it up and then ran the tool, flashed it and the password was gone. But then I had an error for the Security controller. And all the hardware ID's seemed to be gone. I realized looking closer that I had flashed the EC. So i restored the backup image I took but continue get the security controller error, So i found the second SPI(25L12872F?) and dumped that, it looked like what i expected from the BIOS and it actually gave me hardware details so I unlocked that and flashed it back, and then reflashed the EC with it's original backup I took. However while the hardware ID's were fixed, I continue to get security controller errors. After each attempt I have reset security to defaults, entered the code it gives, F1 to clear TPM, and even tried reflashing the BIOS from inside windows, but I continue to get the controller error. Any help would be appreciated.

I have included the "original dumps" although the EC was taken first, i messsed it up, and then backed up the bios, My fear is when I flashed the ec and powered it up, something was changed in the bios chip too and because of that I now have managed to screw up the states between the two and cannot easily get them synchronized again. Im only including the original dumps to try and keep it clean. Hope someone can help

Here's your Unlocked BIOS, Program both files together. In the first boot go to BIOS Menu and disable security options (Default).
You must fill your DMI manually.

[Throwaway900]

Re: hp 450 g7 password

Hi. I was following what people said here and tried unlocking some HP's. So I ran into a problem with one of the laptops, a Probook 450 G7. I thought everyone said it has a 32mb and a 16mb SPI and to onlydo the 16, so I found a chip(25B127DSIG) that was 16MB, I backed it up and then ran the tool, flashed it and the password was gone. But then I had an error for the Security controller. And all the hardware ID's seemed to be gone. I realized looking closer that I had flashed the EC. So i restored the backup image I took but continue get the security controller error, So i found the second SPI(25L12872F?) and dumped that, it looked like what i expected from the BIOS and it actually gave me hardware details so I unlocked that and flashed it back, and then reflashed the EC with it's original backup I took. However while the hardware ID's were fixed, I continue to get security controller errors. After each attempt I have reset security to defaults, entered the code it gives, F1 to clear TPM, and even tried reflashing the BIOS from inside windows, but I continue to get the controller error. Any help would be appreciated.

I have included the "original dumps" although the EC was taken first, i messsed it up, and then backed up the bios, My fear is when I flashed the ec and powered it up, something was changed in the bios chip too and because of that I now have managed to screw up the states between the two and cannot easily get them synchronized again. Im only including the original dumps to try and keep it clean. Hope someone can help

[ZBeeblebrox]

Re: hp 450 g7 password

Okay, at the risk of throwing this thread completely off topic, here's what I've found about the Absolute software:
I reset the security settings in BIOS and wiped the drive with EaseUS Partition Master, as suggested. I then reinstalled Windows 10 with no internet connection. On first start, Absolute software was installed in the Windows folder, I assume by the BIOS. The files were "rpcnetp.exe", "rpcnetp.dll", and "wpbbin.exe", located in the System32 and SysWOW64 folders. "Rpcnetp" also ran as a system service. I stopped the service, and deleted the rpcnetp files (before I found that wpbbin was also an Absolute file), but those files reappeared after a reboot. I then created dummy files (0kb txt files renamed as .exe and .dll) and placed them in the proper locations, after killing the service/running process, and setting the dummy files to read-only. The software did not reactivate after reboot. I then ran Windows Update, and all updates installed without creating the Absolute Software or CTES folders that were installed on first Windows try. It's been running for several hours now without installing the Absolute software or entering "Device Freeze" mode. I haven't tried Windows update without creating the dummy files to disable rpcnetp/wpbbin, so I don't know for sure yet if resetting the Security Defaults in BIOS would have really set Absolute to not install by default, but I will test that in the near future, now that I know how to disable it. I can only assume the software uses the UUID or serial number to check the status, regardless of the persistence module state. I can say that the Device Freeze and Absolute installation does not change the module's inactive state or re-enable it, as the BIOS setting remained permanently disabled even after previous Windows install and Device Freeze. Thanks again for your amazing help with this, and hopefully this info may help anyone dealing with this in the future.

[Vesko356]

Re: hp 450 g7 password

I did wipe and reinstall as soon as the BIOS was set right, but Absolute was forced back in as soon as I did Windows update for drivers. I'll keep playing with it to try to remove it and keep it out. If not, I'll put Linux on it.

This sounds very surprising and quite strange, since Absolute is already deactivated and turned off in the bios.
Try to reset security settings to default in the bios, then format the disk under Diskpart and reinstall Windows once again. There is no logic for me to reappear again now. Are you sure it's a Absolute or may be it's something else like Windows Autopilot?

[ZBeeblebrox]

Re: hp 450 g7 password

I did wipe and reinstall as soon as the BIOS was set right, but Absolute was forced back in as soon as I did Windows update for drivers. I'll keep playing with it to try to remove it and keep it out. If not, I'll put Linux on it.

[Vesko356]

Re: hp 450 g7 password

Vesko356, you are the f*cking man! After playing around with those settings, the "Current State" setting completely disappeared and BIOS screen reports Permanently Disabled and status Inactive.

Finally! Excellent, bye-bye Absolute.

Now to get rid of the damn Absolute software that forces itself in to the system every time it updates, but I won't clutter up this thread with this anymore. Thanks again!

Reinstall Windows, no other option - based on your old bios settings this bloatware is already installed itself on your hard disk, and you should reinstall the operating system to get rid of it once for all.

[ZBeeblebrox]

Re: hp 450 g7 password

Vesko356, you are the f*cking man! After playing around with those settings, the "Current State" setting completely disappeared and BIOS screen reports Permanently Disabled and status Inactive. Now to get rid of the damn Absolute software that forces itself in to the system every time it updates, but I won't clutter up this thread with this anymore. Thanks again!

[Vesko356]

Re: hp 450 g7 password

Hmmm. HP BCU doesn't seem to change the Module from Active to Inactive. BCU returns no errors, but doesn't show a settings change, and re-reading the config still shows Active.
I tried changing a different setting to see if that worked, and it showed the change in the output and the change was there in a re-read. Do you think setting "Permanent Disable Absolute Persistence Module Set Once" to "Yes" and rebooting, then trying to set "Absolute Persistence Module Current State" to "Inactive" would work? Or maybe I should try through NbDmiFit in UEFI-DOS? Thanks for your continued help and patience.

You can try setting both "Permanent Disable Absolute Persistence Module Set Once" to "Yes" and "Absolute Persistence Module Current State" to "Inactive" at once via BCU then restart and enter the bios to see if it's changes, just go ahead and experiment with different options, if something go wrong you can always reflash Winbond chip and start all over.

Also, if I use up the number of reboots for MPM mode, will reflashing the last bios file re-enable the 33 tries?

Yes.

[ZBeeblebrox]

Re: hp 450 g7 password

Hmmm. HP BCU doesn't seem to change the Module from Active to Inactive. BCU returns no errors, but doesn't show a settings change, and re-reading the config still shows Active.
I tried changing a different setting to see if that worked, and it showed the change in the output and the change was there in a re-read. Do you think setting "Permanent Disable Absolute Persistence Module Set Once" to "Yes" and rebooting, then trying to set "Absolute Persistence Module Current State" to "Inactive" would work? Or maybe I should try through NbDmiFit in UEFI-DOS? Thanks for your continued help and patience.

Also, if I use up the number of reboots for MPM mode, will reflashing the last bios file re-enable the 33 tries?