During the windows operation, navigation or installation, quite a number of junk files had been generated. Moreover, those documents can buffer for more than hundred MB of the disk space and cause your operating system getting slower. Meanwhile, the Windows registry size keeps growing when you use Windows. When the registry becomes very large, your computer's performance will be decayed and unstable.

Final Uninstaller can easily clean up all the windows junk files and remove invalid registry entries to optimize PC efficiency. It can clean your PC of the following:
-Browsing History
-Download History
-Saved Form and Search History
-IE cache
-IE cookies
-Offline Website Data
-Saved Passwords
-Authenticated Sessions
-Computer History
-Invalid Installed Programs
-Temporary Files and Folders
-Missing Shared Dlls
-Invalid Start Run Items
-Overdue Menu Items
-Software Scrap
-Window Size and Location Cache
-User Assist History
-IIS Log Files
-Custom Folders
-Clipboard
-Windows Log Files
-Recent Documents (on the Start Menu)
-Class Issues
-Invalid File Extension
-Missing MUI Cache Reference
-ActiveX Controls
-Class IDs
-Prog IDs
-Left over Uninstallers keys
-Invalid Fonts
-Invalid Icons
-Help File References
-Application Paths
-Invalid Shortcuts
-Menu Order Cache
-Temporary File Cache
-Tray Notifications Cache
-Run History (on the Start Menu)
-Windows XP Search Assistant History
-Windows XP Old Prefetch Data
-Windows Memory Dumps after Crashes
-Chkdsk File Fragments
-Hidden Index.dat Files