Hey Guys,
I have just found the solution to this problem (Error 1723, dll file missing).
Use this software "Revo Uninstaller Pro" to uninstalled java from your system.
If your system doesn't have java installed then first install then uninstall.
This is free software and will remove all of the java related registry and folders.
Then, restart your system and install java again.
Thanks
Rajeev Nayan