i have same problem.. but there isnt sound... only a black screen... i dont know what to do guys.. im always mad about it..

I've encountered this problem also. There's nothing but a black screen with music playing in the background.

Using a small laptop:
Windows 7 32 bit,
2 GB of Ram
1.60GHZ Intel Atom processor

Hi.

I had those problem for weeks.
My solution was to start the enfus-updater first.
NF will download some files then, but you will receive a error message.
NF automatically download some files again then and you can click play.
Normally NF starts without any problems then.
Sometimes you have to repeat the procedure.
I know that it is harassing but it works on my system.

regards