Desperately need to downgrade BIOS version on my HP Envy 17t-s100

[Audio01]

Hi, I just updated the BIOS to the latest F.94 version and my computer no longer boots. I have a Windows 7 SP1 installation that was working *perfectly*, with BIOS F.83. But since the update, Windows comes up with a BSOD with the code STOP 0X000000A5 while booting.

I already did a lot of research about this problem and looks like a newer BIOS version has a newer ACPI specification incompatible with Windows 7. The thing is, with that older F.83 BIOS version, everything was working fine!

Now, I tried EVERYTHING to downgrade the BIOS, without any success.

From Windows it's impossible to do. The BIOS update utility (sp77358.exe) gives me an "incompatible BIOS version" legend.

I followed the instructions in this page https://support.hp.com/in-en/document/c02693833 without any luck.

I tried the USB pendrive recovery with the Windows Key + B method. The computer stays with a blank screen and nothing hapens at all (no beeps). The USB pendrive is correctly configured for FAT32. I have tried the various other methods, but none had any effect.

There's no BIOS recovery option when pressing F2 while starting.

So, I'm desperate! I need this notebook with Windows 7 SP1, because I'm using some software that it's incompatible with Windows 10, so I can't upgrade!

Please, is there any way to downgrade?? If not this notebook will no longer be usefull for me. I spent thousands of dollars and I can't use it anymore!

Thank you very much in advance! Any help really welcome!

[The_Fossette]

@Audio01,

Welcome to the HP Support Community!

I assure you I will try my best to get this sorted.

Awesome job on diagnosing the issue correctly and performing smart troubleshooting before posting your question on HP forums. Kudos to you on that score. 

I see that you have already followed all the troubleshooting steps. I recommend you contact HP phone support to further diagnose the issue.

Here is how you can get in touch with the phone support.

1)Click on this link – www.hp.com/contacthp/

2)Select the product type.

3)Enter the serial number of your device or select let HP detect your product option.

4)Select the country from the drop-down.

5)You should see the HP phone support number or Chat option listed.

Let me know how it goes and you have a great day!

If you wish to show appreciation for my efforts, mark my post as Accept as Solution. Your feedback counts!

Cheers!

[Audio01]

Hi, thank you for your answer.

I contacted HP support, and they won't help me in any way or any form. They even don't know what I'm talking about.

I know this is a consumer product, but the support is absent. Your download pages/documentation are plain lies to the customers. Why do you offer all the BIOS revisions for download if I can't freely, at my own will, install whatever version I want/need? You're talking control of MY hardware without MY concent.

Even in the BIOS setup page there's mention to enable the CSM module for legacy WINDOWS 7 SUPPORT! BUT THIS DOESN'T WORK ANYMORE AT ALL! It was working perfectly fine!!! Someone broke that functionality in the latest BIOS's.

Someone's incompetence completely ruined my perfectly working DAW (Digital Audio Workstation) system, with hundreds (even thousands) of dollars invested.

I'm now ditching this mint HP Envy 17t and buying a Lenovo P50-series notebook.

I WILL NEVER EVER BUY AN HP PRODUCT AGAIN, SELL OR RECOMMEND THEM!

I work for the enterprise business and I mean it!!!

[The_Fossette]

@Audio01,

It is great to have you back and your patience is greatly appreciated.

This situation will need some additional support from our internal teams in HP. For that to happen, we will give you additional instructions/information via PM.

Please check your private message icon in the upper right corner of your HP Forums profile.

Good day! Take care 🙂

Cheers!

[Audio01]

Hi again, just an update... there's still no meaningful answer from any HP representative.

[Cheron-Z]

 @Audio01,

Based on your comments I will re-escalated your concerns.

Cheers,

[Audio01]

Hi again, 10 more days passed and I still didn't receive any other response or PM from anyone,