I discovered last week that installing a SCSI pass through, part of some virtual drive software, caused Nero (7.5) and ImgBurn to fail on my home premium big time.
I used to use Daemon Tools without any problems but upon installing that both Nero and ImgBurn stopped working.
It took me a while to trace it but I found the problem - the SCSI controller that gets installed right before it installs Daemon Tools. This is also true for Alcohol 52% & 120%, both of these installed the same SCSI controller and killed Nero.
So I downloaded a few other programs and on first try installed SlySoft Virtual CloneDrive and that looks to have installed a different type of controller altogether and both Nero and ImgBurn work.
Hope that helps someone.