Windows 10: when i press alt+f4 button it hasn't show shutdown and other options

in the same way when I tap the windows start power then it hasn't show shutdown,restart and sleep what is the problem kindly explain that

:)

 

Taskbar in windows 10 hangs on pressing alt f4

I have always been using the shortcut alt+f4 to shutdown the computer. but from few days this shortcut is no longer working on my pc although it perfectly works while closing any window or app. but when i press the shortcut on the desktop the shutdown
or restart options do not show up instead it hangs for sometime, in fact the taskbar becomes unresponsive. the same thing happens at the startup also. it takes too much of time to be finally able to work with the taskbar. i am using windows 10 home on my dell
inspiron laptop. also when i check from the taskmanager it shows 100% disk usage with the winodws explorer taking much of it. can anyone suggest something on this?

 

alt f4 not working in windows 10

Its a common Problem. Please press ALT+Fn button together then F4 it will work.

 

Alt+F4 not working on shutdown and power options on start doesnt contain shutdown and restart

this operation has been cancelled due to restrictions in effect on this computer please contact your system administrator

Sir, this error happens when i try to shut down my system using 'Alt+F4' .

Moreover, i cant find shutdown , restart options in"start->power".

Im using windows 10, kindly pls help me,.