Premium Booster has a strong algorithm of errors detection which may reveal problems in different areas of your registry. Each area has its own severity level. Some problems present just a garbage in your system database while other issues can make a serious impact on your system. We recommend you to read the information below which presents basic understanding of how Premium Booster's scanning engine works.

Application Paths

When new program is installed most likely information about its location will be added to this section of the registry. If the application's path is changed or if it is removed at all this entry becomes invalid. Premium Booster checks the validity of such references by verifying that all paths exist. Otherwise the entry is considered to be invalid and is going to be removed unless Premium Booster could find some alternative paths.

Uninstall Information

Uninstall information is required to provide correct removal of software from your PC. Premium Booster checks the validity of references in this section, so that all of them point to existing paths. Premium Booster ensures that all entries from this section point to valid paths, otherwise if no alternative could be found the reference is removed.

COM/ActiveX

Entries in this section contain information about different COM and ActiveX objects registered in the system. Premium Booster checks that all of the registry keys point to existing files. If Premium Booster can't find the file referenced by some registry key then the key is considered to be invalid.

Help Files

Some applications store information about location of their help files in this registry section. Premium Booster verifies that all of those paths actually exist. If Premium Booster can't find the referenced file it searches all specified local drives for its name.

File Extensions

This section of the registry contains information about all file extensions registered in the system. Premium Booster verifies that registry keys in this section reference applications which correspond to existing file paths.

Font Files

Fonts section holds file paths of all registered fonts. Premium Booster checks that all entries reference valid files on local drives. If it can't find some file then the reference is considered to be invalid and is removed.

Most Recently Used Files

This section contains references to files/folders which were recently used by the user. Premium Booster checks those references for validity and if it finds some invalid link it will delete it from the list.

Shared DLLs

The section contains references to shared DLLs (Dynamic Link Libraries). DLLs hold functions which can be called by different applications, thus if it was removed then the link becomes invalid and there's no further need in its existence. Premium Booster takes care of such references verifying that all DLLs referenced by the keys of this section exist, otherwise it clears the reference.

Shared Folders

This section contains references to shared folders on your computer. Those keys hold settings for the folders on your network. If some shared folder is deleted or removed then the reference becomes invalid, since it doesn't point to the real location of a folder any more. Premium Booster recovers such broken references if it manages to find the folder with the same name on some of your local drives.

Startup Programs

Startup sections of the registry contain information about applications and services which are launched each time the system is started. Premium Booster check the validity of the referenced programs to make sure all those paths exist.

Windows/MS-DOS Shortcuts

Premium Booster also scans all shortcut files (*.lnk, *.pif) checking their validity. If it turns out to be that the shortcut references invalid file or it has invalid icon then Premium Booster tries to find the original object/icon in order to repair the shortcut.

Virtual Device Drivers

This section contains information about virtual device drivers, which are used by your Windows OS. Premium Booster will scan this section for the validity of specified paths. If it's found that the file doesn't exist the link is considered to be invalid and is either removed or substituted by the correct path if it exists.