It will open the Task Manager all of its own accord. After the 'Run' tool box appears on the screen type in 'taskmgr.exe' command and hit 'Enter'.

Firstly press the 'Windows logo key + R' to launch the 'Run' command. Many a times the background processes or tasks impedes the taskbar from functioning properly, thus setting the taskbar right would automatically resolve your issue with the icons. The method is one of the simples of all, yet it is very effective in bringing icons back to taskbar in case of hurry. Part 1: Fix Icon Not Showing on Taskbar by Windows Explorer Part 3: Re-registering the Taskbar using Windows Powershell.Part 2: Fix Icon Not Showing on Taskbar via Registry Editor.Part 1: Fix Icon Not Showing on Taskbar by Windows Explorer.