cannot roll back bios.Signature error HP Stream 14-z010nr

[tbird635]

I made the mistake of updating the bios in my Stream 14. What should have been a simple HP approved update turned into a problem.

It no longer charges.

3 replacement batteries later, it still won't charge.  I can power the laptop by the ac adapter with no issues.

what should be a very simple troubleshooting step / test is, undo what caused the problem ...

roll back the bios and see if it charges. Well, the bioses posted as previous on the HP download site  will not allow a rollback. 

All I get are "signature errors" when using the two previous bios'es listed in the downloads section. The signatures are present in the bios folder I created on a usb stick from another computer.

Downgrade fails either through the windows utility , or the HP Hardware Diagnostics from boot.

The only thing the utility allows me to do is reinstall the newest bios, which doesn't help.

I tried sp77755 and sp70417.   Apparently the 2 older bios'es hp lists do not have valid signatures. That's a huge problem.

Can anyone tell me how to downgrade the bios? Is there a bios out there that will allow me to downgrade that actually has a  valid signature?  This is quite a mistake on the part of HP.

[KrazyToad]

@tbird635

I have gone through your Post and I understand your concerns

Try reinstalling the Microsoft ACPI Compliant Control Method Battery

Step 01. Click on the Start Button
Step 02. Type "Device Manager" in the start search box & open the Device Manager
Step 03. Look for Batteries and expand it by click on the + symbol on the left
Step 04. Right Click on "Microsoft ACPI Compliant Control Method Battery" & uninstall
Note: This Battery driver will get re-installed automatically when you restart the Notebook again
Step 05. Please Shutdown the Notebook
 

You can also follow the instructions in this Link: https://support.hp.com/in-en/document/c02693833 to help you with BIOS Crisis Recovery

Keep me posted how it goes 😊

If the information I've provided was helpful, give us some reinforcement by clicking the "Solution Accepted" on this Post and it will also help other community members with similar issue.
 

[tbird635]

Tried that, did nothing unfortunately.

Also tried 3 different batteries now.

I even tried to roll back the bios, says signature invalid.

[KrazyToad]

@tbird635

At this point I would request you to contact HP Support for Service Options

Click on this link - www.hp.com/contacthp/ and select your Country to get the Contact details for HP Support

Thank you