Or: How to fix issues with sudden Power-Off/battery problems on your (Linux-/Lenovo-)Laptop
Depending on the mainboard this can be verry easy or extremely annoying - took be 2 days on my Lenovo Yoga.
At a glance:
- get yourself a WinPE-USB-Stick with a Webbrowser
- Boot from it and download your BIOS-Update from the manufacturer
- maybe you still need to make changes to this (see below)
- Update the BIOS and reboot
Creating a WinPE-Stick
There are people out there doing the job for you, like theoven.org, but I used the ISO-Image from TenForums because that hase 7zip and Firefox integrated.
Download an ISO-image of your choice and copy (don't use dd, since it is an EFI-Boot-Image!) the contens to a fat32-formatted (!) USB-Stick. You can do that with the command
7z x winpese-x64-14393_17.01.16.iso -o/media/your-user/path-to-fat32-stick/
Yes, there is NO typo here, it is NOT "-x" and there is NO space between "-o" and /media..."!
Then insert your stick, make sure that EFI-boot is enabled in the BIOS and start from that stick.