Symptoms: Task bar disappears and start button does nothing.
Instructions: Access the control panel in Windows 10 by holding the Windows logo key down and pressing X then select Control Panel.
- Control Panel > File Explorer Options > Open File Explorer to: “this PC” not “quick access” and “Clear File Explorer history” – Most likely fix
- Remove unwanted context (right click) menu plugins. This can be done using CCleaner > Tools > Content Menu
- As a temporarily fix Hold down Ctrl-Alt-Del > Task Manager > Processes > Right Click Windows Explorer > Restart. This will allow you to try the fixes above.