After the Windows 10 upgrade my computer goes to a black screen with only the curser showing, how can I fix this?

[Windows Central Question]

After the Windows 10 upgrade my computer goes to a black screen with only the cersur showing

After the Windows 10 upgrade my computer goes to a black screen with only the cersur showing and nothing else shows

 

[ridwan adisurya]

same here, my lumia 625h went blackscreen (loading never finished) when upgraded to windows 10 fast upgrade. but the top menu is working.