Tips on How to Clean Registry
I highly recommend CCleaner for the essential task. It is fast and free software. Not only this software know to clean registry, it is aware of the right way to remove unused space out of your PC with its own harddisk diagnostics module.
Purchase Paid Registry Tool After you try CCleaner to scan and fix your Home windows registry file and the problem still exists. I believe it could be good time for opening up your wallet. The paid registry cleaner version will know how to clean registry greater than most free tools. Beside, it come with dedicated help line for you as well.