Modifications non autorisées sur le firmware, le système d'exploitation ou l'UEFI

We agree, the modification in the BIOS is the description of Marie's solution; she does not state that the BIOS was modified by the update nor explain the boot problem (I observed the same issue with the same scenario as hers). Moreover, she mentioned an English forum and the Asus motherboard documentation that guided her to find the solution.

Without questioning her good faith regarding the authenticity of her Windows version (nor mine, for that matter), here’s a link that might interest you:

https://technet.microsoft.com/en-us/library/hh824987.aspx

and an interesting forum for your curiosity (in English):

http://serverquestions.com/questions/lkup/system-found-unauthorized-changes-on-the-firmware

and given the number of forums discussing it, I think it has happened to many people ;)

see you!

Hello,
I confirm what Jim just wrote, I also have an Asus motherboard, I have the same problem. The solution is to revert using a system image, but the updates make me go back to square one.
Note that the problem occurred after the latest updates of Windows 7.
Best regards,
thank you.

Thank you very much for your quick response. In my case, that's not the issue; I've checked: no USB stick or anything else connected... it's a problem following the installation of Windows updates...

Thank you again, Jeannets, for your response. It helped me morally to have an answer while I was pulling my hair out. Plus, your hint was very accurate: I had already encountered this problem: impossible to start due to a USB stick left plugged in.

In the end, good news, I just managed to restart my computer... after 6 hours of online research... (I have to say that I am not at all an expert with computers!) and a call to a computer shop that assured me I needed to format the C drive and reinstall Windows... for 80€

Anyway, for anyone who might face this: COURAGE and here is the solution I found:

I disabled the "secure boot" since the error message mentioned "unauthorized...". To do this:
- go to the "advanced" BIOS (to do this, press N, as indicated in the message, and you will enter the BIOS, then click on "advanced" / NOTE in the BIOS, you can only navigate with the arrow keys, enter, and escape / NOTE2: take time to familiarize yourself with the BIOS: it can be intimidating at first... you just need to get used to it a bit)
- go to Boot / and replace in one of the dropdown menus (I don't remember which one, but there is only one to offer these 2 choices), replace "windows UEFI mode" with "Other OS"
- then F10 to exit and save the changes
and it works!

To come up with this idea:
- I looked at English forums of people who had the same type of error messages. In their cases, it was related to installing 2 operating systems (Windows and Linux, for example)
- I also flipped through the little manual for my motherboard (Asus H87-plus), page 3.42 Secure Boot

So in the end, I have a secure boot through a normal boot. And my computer finally decided to start!

Thank you soooo much, I've been panicking for 3 hours and looking everywhere for a solution!

Yes, I think it was an update.
I am on Windows 7 and it's the original version.

Hello Jeannets, I understand that you might be surprised by the issue I've encountered... I'm still surprised too!!!
In my case, it's a computer I purchased 2 years ago from a computer hardware store, Allen Computers, which assembled it based on my needs (for photo and video work). So the issue doesn't come from a cracked Windows, but perhaps from how it was initially installed...
I haven't added anything like a hard drive, etc. to my computer. I use a Canon printer and a Wacom graphics tablet. These are peripherals I have been using for a long time already. My issue arose after installing the latest Windows 7 update. I agreed to the restart; then at the end of the day, I turned off the computer; and I couldn't turn it back on the next day.
Apparently, this problem has been happening for several days to people who have an Asus, which is my case... Thank you again to you and Jim for this exchange regarding this issue... it raises questions!! Best wishes!

Hello Gab9175, I'm happy that you managed to restart your PC and that my explanations helped you; then, I didn't do anything special; I think it's probably better not to disable Windows updates... that said, I admit I don't know anything about computers...! Anyway, it works like that! Phew!! Good luck with everything!!

Hello,

I am experiencing the same problem with my mom's PC... There were updates and since then, it shows this error message at startup.
I saw that you found the solution, could you please share it again? I can't find it in the discussion anymore.

Thank you in advance.

Have a good day.
Elodie