What's missing in your post is a lot of information.

1. Did it ever work?

2. How about an overview of the machine?

3. Does the Windows 2000 have all it's patches?
No one really can support anything but the latest SP4 + all the latest. Sorry, I wish I could, but I've learned this lesson and must not waste your time if you decide to stick with SP2 or such. Again, my apology if that sounds harsh, but my experience is that without latest OS patches, you see far too many other issues.

4. Does it get further with the case cover off?
Hint: this indicates heat sensitivity issues.

5. Without a machine inventory, I can't tell if the OS is installed proper. Some only learn from others that motherboard and other drivers are only installed by us and not with any Microsoft button or Windows Update.

6. What EXACT VERSION of NERO are you using?
Hint: Get the update from them.

7. If this is a new setup, imagine the owners that find out they get to update the FLASH memory in the CDRW drive! They do scream that it's new and you should have to do that. I wish this was always true. Is the FLASH FIRMWARE in your drive uptodate?

Bob