Hello Ivo_Sk and welcome to the Microsoft Community!
Thank you for your feedback regarding the computer crashing after the update!
I would like to confirm with you what is the problem with the computer?
Is it that no program is clickable, or is it crashing with a blue screen, etc.?
You can describe it in detail
Then you can check if the computer is working fine after the update.
You can click windows key>settings>windows update>update history>uninstall update.
If your computer does not turn on and enter the system
Then you can try to reboot your computer by holding down shift in the login account screen and go to WinRE screen.
Then click Troubleshooting>Advanced Options>Uninstall Updates to see if this solves the problem.
We look forward to hearing from you again!
Kirito|Microsoft Community Support Specialist