Now like I said nothing helps. So because the applications are no more accessible (they are always 100% of the time running in the background > also at startup some icons do not show in the systray but the applications are running nevertheless); what I do to make the icons disappear and have access to the programs is NOT clicking on a shortcut to the program because I would get a message "....is already running". I usually close the program with Ctrl+Alt+Delete and reopen it by clicking on it's shortcut. I can make every icon reappear this way exept for some.....
And here's my question: Is there a shortcut or an indication in the Task Manager for "safely remove hardware" ? if that icon doesn't show up in the systray ?