I've just seen (and sorted) this exact problem on my fathers computer. Try this...
1. Boot into safe mode and verify that the Nero software then works. To do this, press F8 repeatedly as windows is starting then choose SAFE MODE from the menu that appears.
2. After fully booted, run Nero Burning Rom through the Start/program files etc.
3. If it runs (mine did), then on to step 4
4. Reboot normally.
5. Go into device manager and disable your hardware items one by one, trying nero at each step. In my case it was Ports/LPT1 that was preventing the nero from working. It worked fine when LPT1 was disabled (disable in properties).
I suspect that in my case the scanner that was plugged into LPT1 used a old driver and somehow messed up the port. Printer and scanner worked fine but conflicted with Nero!
Interested to hear if this sorts it out.
