My laptop turns black, displaying only the cursor as soon as it gets to the point where it shows the Windows login. When I did my research to fix the issue, I saw that disabling fast startup may resolve it (the problem actually occurred the day I enabled fast startup, although I had used it without any problems in the past).
However, I'm not able to login, and when I login using safe mode, the fast startup option isn't there. How do I fix it?