I have been trying to burn an audio cd all day and my nero, which has worked fine for a couple of years is only copying the first track before stopping and giving the messages, 'buffer underun' and 'disc fixated.'I downloaded the updates and installed them but to no avail. Also, i dont know if this is related but i ran sfc and it came up with about 50 files which are missing due to me running a registry cleaner some time ago. The files end in .dll, .vxd, .sys, and .exe. how can i replace these files. i just tried Drive rescue but didnt know what to do with the results when i got them??