Lost Bios Password

[AlisonVW]

Hi REO. 

Could you kindly get me the unlock code too?  Much appreciated. 

My error is [58183890]

HP laptop midel 15-g088ca

Many thanks,

Alison

[DavidPK · Accepted solution]

@AlisonVW

Reboot and enter  47881216

Regards,

DP-K

[AlisonVW]

It worked!!  Many, many thanks. 

Now I reset bios to default. But after booting the little dots go around in a circle for a bit and then screen goes blank. I never do see a Windows logo. How can I get back to “last known good” windows boot?

[DavidPK]

Hi,

You're welcome

Regarding the subsequent issue, first Shutdown the notebook. 

Tap away at the esc key as you start the notebook to enter the Start-up Menu.  Select the Diagnostic Menu option ( f2 ) and run the tests on the Hard Drive.

Post back with the results, including any error codes that may be generated.

Can you also post back with the version of Windows running on the notebook.

Regards,

DP-K

[AlisonVW]

I hope I haven’t made matters worse. Before Inread your reply I had already done the test/diagnostics you noted. And after reading an HP advice about blank screen, I have rebooted while pressing wondows key and B. I assume that the bios is updating, however it’s been 10 minutes and the screen is blank. I didn’t see an HP BIOS update screen as the support article said I should. 

So, I’m stuck again. I am using Windows 10 Home and as far as I know all windows updates are done. Before rebooting the system the last time I had windows, I was tinkering with windows networking (to join a new workgroup). Uuugh!  What next?

[DavidPK]

Hi,

Hopefully it's simply doing nothing as opposed to hanging on reloading a previous bios revision - give it 10 more minutes, then force a shutdown by holding down the power button for 10 seconds.

Try booting the notebook again.  If it starts, great - if it doesn't, try the following.

First of all, use another PC to create a bootable Windows 10 DVD or USB Flash Drive via the following link.  Under the section 'Need to create a USB, DVD or ISO', download the Media Creation Tool.

http://www.microsoft.com/en-us/software-download/windows10

Once you have this, run the tool, select 'Create installation media for another PC', then select the language, edition of Windows 10, and either 32bit or 64bit that is relevant to your current installation.

Follow the rest of the prompts to create this and then click Finish when completed.

Boot the notebook from your Windows 10 installation media as follows - this does assume your hard drive has a guid partition table.

Insert the Windows 10 Installation Media and Shutdown the notebook.

Tap away at the esc key as soon as you press the power button to enter the Start-up Menu and then select the Boot Options Menu ( f9 ).

Use the arrow keys to highlight the CDROM (uefi) or USB Flash Driver ( uefi ) option, depending on which typre of media you created, then hit enter - if prompted to 'Press any key to continue....' - do so.

Select the ‘Repair your computer’ option, select Troubleshoot and then select Advanced Option.  On the Advanced options screen, select the Command Prompt - See option 1 on This Link for a detailed guide on accessing the Command Prompt.

Once you have launched the Command Prompt, do the following:

Type Diskpart and hit enter.

Assuming your installation is on disk 0

Type select disk 0 and hit enter.

Type list volume and hit enter.

Look for the partition that’s formatted as FAT32 and select it – ie if it’s listed as Volume 3 then type:

Select volume 3 and hit enter.

Next, assign it a drive letter by typing:

assign letter=b: then hit enter.

Then type exit and hit enter.

Then enter the following commands, hitting enter after each entry.

cd /d b:\EFI\Microsoft\Boot\

ren BCD BCD.bak

bootrec /RebuildBCD

Hopefully at this point, you will see a message indicating 1 installation has been found and will get a prompt to add this entry - if you do, type Y and hit enter.

When complete, try rebooting the notebook.

Regards,

DP-K