I have a relatively new Lenovo Yoga 3 Pro ultralite. Worked perfectly for a month but has developed a nasty & annoying habit: Any program that I have open constantly minimizes to the task bar. Programs include Outlook, Firefox, Internet Explorer, File management, etc. These programs will minimize within 10 to 30 seconds of being open. I have run deep scans for viruses, malware & root kits. I was running AVG Free Anti-Virus, but uninstalled it to see if it might be the culprit. Now relying on Win built-in anti-virus. Anybody have any idea?