Problems with NT Task Manager

I have a strange problem on my machine. When i invoke my task managr by right clicking on the windows bar, my task manager comes and it has no tabs to shift to processses, performance and applications.

Seems that all the tabs have been lost and the only way i can switch panes is using the Ctrl + Tab key. Can anypne tell me how to regenerate and get my tabs panes and make my Task Manager look as it was originally.