Problem with my Nero Express while burning a DVD

Hi Experts,
I faced a problem with my Nero Express. While burning a DVD it has encountered an error. I do not understand it. It says “Burn process failed at 8X (11,040KB/s)”.

Nero Express
Burn process failed at 8x (11,040 KB/s)
OK
I failed to fix the error. If you have any idea regarding this issue please help me.
Thanks in advance.
