Entering BIOS shows a complete black screen Acer spin 5 13i 52N-50AB

I installed Pop_OS (Linux) alongside windows on my girlfriend's Acer spin 5 13i 52N-50AB. Worked fine, until I wanted to set Pop_OS as first boot-priority, in order to have GRUB Bootloader to choose the operating system to boot.

However, now every time I want to access the BIOS, regardless if via hitting FN and f2 during boot or via windows advanced startup, just a black screen appears. It does nothing, when hitting any key.

It's strange. I already installed Fedora on her Laptop and this caused no such issue. However. For the installation of Pop_OS, I had to disable secureboot. Has this something to do with the black screen?

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

Accepted answers

StevenGen

https://community.acer.com/en/discussion/comment/1164556#Comment_1164556

It seems to me that you might have a frozen super IO and a bios chip, take the main and bios batteries out and after short the bios + and - pins together, as this does a hard reset of the super IO and bios chips, leave the batteries disconnected for 5min and reconnect and reboot laptop, as that should reset the super IO chip and the bios chip, otherwise you need to take your laptop to an experienced tech so they can analyse the exact problems of your laptop, as a user like you hasn't got the appropriate tools to fix anything except do the resets that you have done,

nido_nid

https://community.acer.com/en/discussion/comment/1164738#Comment_1164738

Ok, thank you for your help. I think im gonna hand it in to a repair service. I don't have the confidence to do this myself. But now, i know, what could be the error.

All comments

StevenGen

https://community.acer.com/en/discussion/675420/entering-bios-shows-a-complete-black-screen

Boot into bios through Windows and see not pressing F2

nido_nid

https://community.acer.com/en/discussion/comment/1164478#Comment_1164478

As mentioned, it does not matter wich way i enter the bios. Result is the same.

StevenGen

https://community.acer.com/en/discussion/comment/1164556#Comment_1164556

It seems to me that you might have a frozen super IO and a bios chip, take the main and bios batteries out and after short the bios + and - pins together, as this does a hard reset of the super IO and bios chips, leave the batteries disconnected for 5min and reconnect and reboot laptop, as that should reset the super IO chip and the bios chip, otherwise you need to take your laptop to an experienced tech so they can analyse the exact problems of your laptop, as a user like you hasn't got the appropriate tools to fix anything except do the resets that you have done,

nido_nid

https://community.acer.com/en/discussion/comment/1164738#Comment_1164738

Ok, thank you for your help. I think im gonna hand it in to a repair service. I don't have the confidence to do this myself. But now, i know, what could be the error.

billsey

Pop_OS! is notorious for blocking access to the BIOS... :(

nido_nid

https://community.acer.com/en/discussion/comment/1165351#Comment_1165351

Never heard of this before. Seems to be a very specific Problem on Acer. But thanks for the tip! I'm gonna go witz another distro, to see if it's solving the issue.

billsey

No, it's the way they set grub up. I've seen it on several makes of computer, they always have 0 seconds available to get the BIOS key pressed before the OS starts booting. I think they might be flushing the keyboard buffer at the end of POST to get rid of keypresses made during POST. You can usually get around it by booting several times with the key pressed during the entire boot process, which gives a slight window of opportunity for the key to be recognized before grub takes over.

nido_nid

https://community.acer.com/en/discussion/comment/1166033#Comment_1166033

That is not the problem. When I press F2 at startup or access the BIOS via the Windows recovery screen gets me the same result.

billsey

You aren't getting into the BIOS, you are getting either into grub or an EFI shell...

nido_nid

https://community.acer.com/en/discussion/comment/1166052#Comment_1166052

Are you sure? Shouldn't the option on Windows advanced startup prompt me into BIOS, regardless of the time set, to press the key? And why am I getting stuck on a blank screen, when pressing F2, when not because of a broken BIOS?

billsey

Nope, the option in Windows just sets things up, the boot manager determines what to do with that... In this case, grub. I think the blank screen is likely the shell. Do you get a cursor at all? Pop_OS! is a real pain to diagnose...