Double click the icon in order to see the name of the application, then use its uninstaller to remove it from your computer. If you believe that it's malware try running Revo Uninstaller. Even if it can't uninstall the application normally, it will force it to uninstall by wiping out all traces of its presence from the system.
After that, try running Combofix to make sure that there are no leftover rogue registry keys or toolbars in your system.
Combofix will restart the computer if it's necessary in case you will be alarmed.