Usually, the uninstaller of an application is located in its Program Files folder. Check for it and run the uninstaller executable if available. If this doesn't work, try removing it from Control Panel(Start, Control Panel, Add or Remove Programs, select your application and hit Remove). A more radical solution is to perform a forced uninstall with the help of a removal tool, such as Revo Uninstaller or FileASSASSIN. Ultimately, consider removing the application manually from Windows Registry. Go to Start, Run and type Regedit. Delete the corresponding folders from the following locations: HKEYLOCALMACHINE\SOFTWARE, HKEYCURRENTUSER\SOFTWARE, HKEYLOCALMACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall and HKEYLOCALMACHINE\System\CurrentControlSet\Services and the additional entry from HKEYCURRENTUSER\Software\Microsoft\Windows NT\CurrentVersion\Windows. But, keep in mind that modifying the Windows Registry can seriously damage your computer if you don't work carefully.