Running Windows 10, 64 bit addressing on HP Slimline. Successfully using Opera for months. Today, it wouldn't start; produced a white window and never progressed; task took up memory but never put out records or showed any other signs of activity. Ended task several times from Task Mgr. Decided to uninstall and re-install. Uninstall never completed until forcing End Task in Task Mgr. Neither did disabling Anti-Virus and Malwarebytes. Is there a set of instructions or tool available for completely uninstalling Opera?