RegCure:
diagnosing Windows Errors: Runtime Errors, Rundll32 exe, Kernel32, DLL, Win32 Errors, Blue Screen System Crashes, ActiveX, Application Errors and more...
There are a number of common PC errors that can be avoided with a properly maintained registry. If you're experiencing any of the following windows error messages then a good quality registry cleaner with the appropriate PC diagnostic features will be useful in diagnosing and repairing your system:

Rundll32 exe
Runtime Error
Blue Screen
Win32 Error
Kernel32 DLL Error
Rundll Error
Dll Error
Windows System32 Error
Application Errors
ActiveX Errors
Startup Errors

RegCure features:

Easy to use interface
Full registry backup
Built in scheduler
Startup manager
Deletes empty registry Keys
Compress or Defrag Registry
COM/ActiveX scanning
Removes duplicate files
Checks invalid Class Keys
Checks missing font files
Checks DLL conflicts
Checks invalid application paths
Checks invalid shortcuts
Checks invalid file associations