Well since you started a new thread, we have no way of knowing what thread you were replying to. That said, by what you did put here, I am going to guess you have either a black screen with a cursor only after the logo? If that is the case, the instructions below should help.
Now if that isn't what is happening, you need to reply to this thread, not start a new one, using the space under 'your answer' and clicking 'submit your answer'.
Note: If this problem started after an update (or system reinstall), please make sure the laptop is not connected to the internet in any way before you use the following instructions.
Try the following...
1. Power off the laptop.
2. Power on the laptop.
3. As soon as you see the rotating loading...