Unable to Access BIOS on Lenovo P3 Tower Despite Multiple Attempts (BIOS Accessible a

[leonardosalim]

Hello everyone,
I'm facing a frustrating issue with my Lenovo P3 Tower, and I'm hoping someone here can help.
System Details:

• Model: Lenovo P3 Tower
• GPU: NVIDIA T400 4 GB
• Current OS: Ubuntu 22.10 (Kinetic Kudu)

The Issue:

I recently got my computer back from a repair center, and they informed me that the drivers were installed correctly. However, I'm now trying to access the BIOS to make some changes, but I can't seem to enter it, no matter how many times I try.
What I've Tried:

• Pressing the usual keys (F1,F2, F12, Esc, Del, etc.) repeatedly during startup—I've tried this over 100 times with no success.
• Using a different keyboard and switching USB ports.
• Attempting to access the BIOS from within Ubuntu using sudo systemctl reboot --firmware-setup.
• Disabling Fast Boot and Secure Boot (if they were enabled) via Ubuntu.
• The repair center sent me a picture showing that they were able to access the BIOS, so I know it's possible, but I just can't seem to get it to work on my end.

What I Need Help With:

1. Why might I be unable to access the BIOS even though the repair center could?
2. Are there any specific tricks or less common methods I can try to enter the BIOS on a Lenovo P3 Tower?
3. Could this be related to the installed drivers or any other software issue?
4. Is there a way to reset or force entry into the BIOS using hardware (e.g., a specific jumper or button on the motherboard)?

I’m trying to upgrade (or rather, downgrade) my OS from Ubuntu 22.10 to Ubuntu 22.04 LTS for stability reasons, but I can't do that without accessing the BIOS to boot from a USB drive.
Any advice or suggestions would be greatly appreciated! Thank you in advance.

[currentshaft]

cf

[tea for one]

(a) Contact the repair centre and ask them how they accessed the UEFI Settings (BIOS)
(b) Remove all disks - some PCs will then automatically jump into the UEFI Settings (BIOS)
(c) Remove your internal disk(s) and leave the bootable usb attached - the usb may boot
(A bootable usb will show Grub, which also has a menu entry for UEFI Firmware Settings)
(d) Install rEFInd on a USB stick
https://www.rodsbooks.com/refind/
https://www.rodsbooks.com/refind/getting.html > A USB Flash Drive Image File
rEFInd has options to boot into UEFI firmware or start an EFI shell
You can boot an external device via an EFI shell (although it's a bit fiddly)

[leonardosalim]

I will try these methods. Thank you for your replay.

[leonardosalim]

Thank you for your replay. I've tried this but the issue still unfortunately not solved.

[bobunderwood99]

According to the manual
https://download.lenovo.com/pccbbs/t...w_linux_ug.pdf
you may need to use Fn+F1.

[currentshaft]

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