ma1, The Right-click context menu is dependant upon "Dragging and Dropping" being enabled in the Customize Start Menu settings. To check to see if this is the case:

Right-click on the Start button, then select Properties.

With the Start Menu Tab selected, click on the Customize button next to the Start Menu, then select the Advanced tab.

Under the Start menu items listing, is the "Enable dragging and dropping" option checked? If not, check it.

Click on the OK button, then click on the Apply button.

Hope this helps,
Tufenuf