Lenovo Thinkpad yoga c13 weird login issues (no screen/changed hardware)

Hi,

due to a special problem i live booted Ubuntu a couple of times within the last few days on my Thinkpad Yoga C13 (i had to flash a chip and had a raspberry pi pico connected), ever since I have troubles getting “into” Win11 which is installed on this machine (Single boot).
The machine shows the loading screen afterwards (turning wheel) the screen goes blank i sometimes see the cursor a couple of times for some seconds but the screen stays black. Sometimes I am able to get the loginscreen to show just by typing my pin, but this does not always work. (Most of the times it only works after a couple of tries putting in the pin space and enter randomly)

How would I fix this most conveniantly?