Run a virus/malware scan of your entire system. Some rockalldll.dll errors could be related to a virus or other malware infection on your computer that has damaged the DLL file. It's even possible that the rockalldll.dll error you're seeing is related to a hostile program that's masquerading as the file.
Use System Restore to undo recent system changes. If you suspect that the rockalldll.dll error was caused by a change made to an important file or configuration, a System Restore could solve the problem.
Reinstall the program that uses the rockalldll.dll file. If the rockalldll.dll DLL error occurs when you use a particular program, reinstalling the program should replace the file.
Important: Try your best to complete this step. Reinstalling the program that provides the rockalldll.dll file, if possible, is a likely solution to this DLL error.