Black screen with cursor

[Euan24]

I upgraded to Windows 10 but didn't like it so reverted back to Windows 8.1.

However when I logged in I got a black screen where I can move my cursor and that is it. I don't know what to do and I cannot refresh because I don't have the windows disk. Help?

 

[Euan24]

MERGED QUESTION
Question from Euan24 : "Black screen with cursor"

I upgraded to Windows 10 but didn't like it so reverted back to Windows 8.1.

However when I logged in I got a black screen where I can move my cursor and that is it. I don't know what to do and I cannot refresh because I don't have the windows disk. Help?