Dear MahmutERDAL,
Thanks for updating me.
Since the computer does not start, kindly disconnect all external devices connected to the computer and try the steps below to fix the issue:
1-Force the computer to shut down 2 times until you get windows Troubleshooting > Advanced Options> Startup repair.
Then, check if it logs on to Windows or not.
2-Also, you can try the same procedure but this time uninstall the latest update.
If you have a system restore point, perform a system restore.
3-If it did not help, start your computer in Safe Mode:
https://support.microsoft.com/en-us/windows/sta...
if you could log in with Safe Mode, open CMD as administrator > Type these commands and hit enter:
DISM /Online /Cleanup-Image /RestoreHealth
Once it finishes, type this command and hit enter:
sfc /scannow
4-If it did not help, create a bootable USB and boot your computer with the USB:
https://support.microsoft.com/en-us/windows/cre...
On the installation window, click on repair.
After that, check if it fixed the issue or not.
5-If the issue still persists, follow the steps below to rescue files:
https://answers.microsoft.com/en-us/windows/for...
After that, Force the computer to shut down 2 times until you get windows Troubleshooting > Advanced Options> Command Prompt > Type these commands and hit after each:
Diskpart
list disk
select disk X (replace X with your drive that contains system files)
clean
Then, perform a clean install by following the instructions below:
https://answers.microsoft.com/en-us/windows/for...
Please let me know if you need further assistance.
Kind regards,