I was recently installing/uninstalling a ton of programs and at the end, ran CCleaner. Well that turned out to be a mistake (also because I didn't back up the registry) and ended up with a botched Java Runtime Environment (JRE) install. I only found that out when the newest update to Java came up and returned with an error box stating "Internal Error 2753. regutils.dll". Wow, such a specific message. I did some searching around and found that you can use the Windows Installer CleanUp Utility to get rid of all your old Java installations and then install the newest version. That's what worked for me, I hope it works for you too.