Burn proccess starts and the pc locks up

My daughter has a new pc and it came with nero 7 essentials oem software, she only has one drive to copy and burn so we selected copy dvd in the launch, the file is saved to the hard drive then the burn proccess starts and the pc locks up. when I look at the file that has been sved it says it is a cd file not a dvd file. we definately select dvd and not cd so what is the matter??

Some DVDs have protections that Nero cannot handle. What is the DVD you are trying to copy/backup? More details about your PC may be useful too.

Do you have a log file for Nero (if you post it here, be sure to edit out the serial number)?