I bought a new system with LG DVD writer and it came with a Cyberlink Power DVD solution CD which included OEM version of Nero Express. My OS is Windows 2000 SP4. When I try to burn a DVD-R or DVD-RW Nero and also the system hangs at 1% burn status. I have to power off the system and could not even shut it down properly. Please let me know why this is happening and what I should do?