Fujitsu laptop won't turn on after battery control update

Hello,

I updated the software on my Fujitsu Lifebook E554 as per instructions on the pop-ups. Bios update went well, then I did the "Battery Control" software update. The laptop shut down (but the software warned that this could happen), but after that it won't turn on. Wall adapter is working, but charging light on the laptop no longer lights up, power button does nothing, tried unplugging the wall adapter and plugging back in, tried removing the battery, etc. Even tried switching ssd's. Nothing works. Last resort would probably be resetting the CMOS by unplugging the CMOS battery? But I thought I'd ask before doing that, if there is any other solution.
Please help. Laptop was working fine before that (on Windows 10), now I swapped ssd's and installed fresh windows11, configured it etc., then after installing fujitsu software it died.

Windows