Software crashes may also leave behind corrupt entries within the registry.

The worst thing is that Windows does not know the importance of the entries added to the registry by third-party software and usually does not take any action against them. These entries are not removed even if you uninstall the actual software. What’s more, many trial software and freeware programs add hidden or embedded entries within the registry to maintain licensing information. However, the main threat usually comes from various third-party software, which at times, deliberately fill up the registry with unwanted entries. And, your Windows system ensures that these entries are properly maintained in the registry and removed when no longer required. On a new system, the registry is compact and comprises only essential information required to keep your PC operational. The registry is a centralized database that stores all information related to hardware and software, user preferences, and system setup of your system.

Registry repair windows 7 software