Nitro AN515-54-59KB Changes in BIOS reset automatically after turning off my laptop.

Hello, I own a AN515-54-59KB which I used to use with Windows 10. One day I turned the laptop on and it got into a blue screen not being able to boot into Windows (Windows was installed in my SSD). I saw this as an opportunity to try another OS, so I installed Arch Linux in the SSD with no problems in the process. After one day using Arch I got an error message saying "No bootable device". I asked that question in the Arch forums and I was told that my BIOS couldn't find the efi boot file and I had to create a fallback. It solved my problem, but now I have this one. In the Arch Linux installation guide, it says that you have to disable the secure boot option and change the SATA mode to AHCI. The problem is that when I turn on the laptop, I have to press the power button several times and for a really long time. Besides, when the laptop turns on, I get the "security boot fail" message. I solve this by getting into the BIOS and disabling the secure boot, setting the correct date and hour and changing the SATA mode. After that I'm able to use Arch normally. But when I turn off the laptop for a relatively long time, I have to press the power button several times again and all the changes I made in the BIOS reset. I have to redo the process everytime I use my laptop. Any ideas about what can be happening?

[Edited the thread to add model name to the title]

Accepted answers

All comments

StevenGen

https://community.acer.com/en/discussion/677286/changes-in-bios-reset-automatically-after-turning-off-my-laptop

If you want to run Linux only on your AN515-54 then fine, as and by what you are saying above, it seems that your laptop hard reset, as its got either a partially faulty super IO chip or a bios chip that needs resetting, turn the laptop off and take the battery out and the bios battery out too, take the ram out also, after taking all these components out, shorten the + & - pins on the bios batteries mobo plug and leave the laptop like that for at least 15min, reconnect all and reboot as that should fix your problems.

But and imo, I would strongly recommend that you reinstall either Win-10 but preferably Win-11 that this laptop is compatible with and do a Clean Install and format the boot drive completely within the process of the windows installation process, after that and to continue the install, on a separate USB copy the AN515-54s IRST (Intel® Rapid Storage Technology) Driver Version: 17.5.2.1024 from the AN515-54s Drivers & Manuals section and then install this boot M.2 driver so that you can finish the preferably Win-11 version 22H2 OS build 22621.963 installation and then make sure that all windows updates are done and all Intel drivers are up to date and all NVIDIA graphics are up to date, as all this will make your AN515-54 perform to its intended best OS performance, as Linux is just an add on OS and can be an addition as a dual boot OS. As and probably, you have never had this laptop properly setup and that is imo why you have had all those problems.

LeonN

Hello. Thanks for replying. I'm currently redoing the process becauae I did it once and it didn't work, but I have some doubts about it.

As you can see, I've removed the battery, the CMOS and the RAM. The laptop is unplugged and I'm using a magnetized screwdriver, the first time I used a screwdriver that didn't attract the screws. I don't know if this will affect the process.

LeonN

Now that I finished, the behaviour is the same as the last one. The laptop turns on for a while and then turns out, it does that a few time as you can see in the video. Finally I get the message of the secure boot.