Just today I read a post stating that Java has a leak; so, I ran a MalwareBytes Anti-Malware scan and it found an harmful item and thus I deleted that item. After restarting my computer from a prompt, my Lenovo v570 laptop now turns on with a black screen and a movable cursor.
The Ctrl+Alt+Delete does not work.
I have tried in safe mode and it turns on properly. So, I tried to do what others suggested on other forums, which was to "roll back my graphics driver". After trying that, nothing has changed.