PxHlpa64.sys. Most common cause of a cdrom.sys error, and very widely used by Roxio. In my best guess it is still present there, and it usually remains even after uninstalling Roxio products.
Go to C:\Windows\System32\drivers
and\or C:\Windows\syswow64\drivers. If PxHlpa64.sys is present there, delete it.
Let us know the results.