Most advrcntr2.dll "not found" errors are due to issues with the Nero CD and DVD burning software program. The advrcntr2.dll DLL file is a file that must exist in the correct folder for Nero to burn CDs or DVDs.
Most often the "This program requires the file advrcntr2.dll, which was not found on this system." error, are caused when, for whatever reason, the advrcntr2.dll file is deleted or moved from its proper location.
The advrcntr2.dll file might go "missing" because it was accidentally deleted from the folder, because an anti-virus or other security program mistakenly removed it thinking it was a security threat, or perhaps when you last upgraded or reinstalled Nero.
Do not, under any circumstances, download the advrcntr2.dll file from any "DLL download site." There are several reasons that downloading DLLs from these sites are never a good idea.
(If you've already downloaded advrcntr2.dll from one of those DLL download sites, remove it from wherever you copied it to and continue with the following steps).
Restart your computer. The advrcntr2.dll error might be a fluke and a simple restart could clear it up completely.
Record the serial number of your particular Nero installation. Follow these instructions on Nero's site for locating the serial number to your particular Nero version.
If you can't find your Nero serial number using Nero's instructions a product key finder program could help. (here is one that may help: http://download.cnet.com/Keyfinder-2010/3000-2094_4-75183881.html?tag=mncol;2
Uninstall Nero from your computer.
Be sure to uninstall using the Uninstall Nero link in the Nero program group (if available) or use the Programs or Add/Remove Programs utility in Control Panel.
Restart your computer.
Download the Nero General CleanTool utility ( http://www.nero.com/enu/tools-utilities.html
). Install and run this free program from Nero. This utility will ensure that Nero is 100% removed from your computer.
Restart your computer again, just to be safe.
Reinstall Nero from your original installation CD or downloaded file. Hopefully, this step should restore the advrcntr2.dll file.
Install the latest update to your Nero program if there is one available. There may have been certain issues in your original version of Nero that caused the advrcntr2.dll error you've been seeing.
Restart your computer again.
Run a virus/malware scan of your entire system if the Nero reinstallation steps don't resolve your issue. Some advrcntr2.dll issues can actually be related to hostile programs that masquerade as the advrcntr2.dll file.
Note: The advrcntr2.dll file should be located in the C:\Program Files\Common Files\Ahead\Lib folder. If you find the advrcntr2.dll file in the C:\Windows or C:\Windows\System32 folder, chances are it is not Nero's legitimate advrcntr2.dll file.
Hope this helps you.