Why is my laptop only showing a black screen after saying preparing windows for 10 minutes?

[Microsoft Windows]

Its a lenovo laptop on windows 10.I have tried absolutely everything it will only respond to control alt delete where i can load up task manager.I think it was caused by a faulty update but I just cannot find anyway to fix itIve hard reset it so many timesIve pressed Ctrl Shift windows Band ive pressed Windows + Pits super slow and the CPU is at 100%Please help!!

Continue reading...