I think trial registry cleaner can be the solution for a while and they are many in internet. However, I usually use Reggenie register cleaner to help me out of the registry's problems. Fortunately, you are still able to download its trial version. You still have to maintain your computer although you have install the in your software. You need to run this windows registry cleaner software and update it periodically as there are always new and advanced viruses that can harm your software anytime.

However, the schedule of how often you should run your registry cleaner tools depend on how many times you install and uninstall, download and delete files and the condition of the software. If they are are infected by virus or not. Therefore, before buying registry tools, you can still download the trial registry cleaner...