Bios no longer works, what to do?

Since I activated Fastboot in the bios, I no longer get into the BIOS. A BIOS reset is unfortunately not that easy because it is a notebook. Windows doesn't run either, so I'd like to go into the BIOS. Does anyone have any tips on how I can get back into the BIOS?

https://www.giga.de/...-ins-bios/

Simply press it again and again

If I have already tried, unfortunately it does not work

Carry on… It works!

Otherwise take ma battery and start 2-3 times without power

Own UEFI / BIOS settings can be reset after opening the laptop by removing the CMOS battery (mostly Li-cell type CR2032) for about 5 minutes. - The time and date may then have to be reset.

If you do not know which key can be used to open the UEFI / BIOS, the following way also works when the Win10 laptop / PC is switched on:
Settings> Update and security> Links: Recovery> Advanced start: Restart now> Troubleshoot> Advanced options> UEFI firmware settings> Restart…

Unfortunately, taking the battery out is not so easy with the laptop

Well, looking at it won't heal either…