With Windows 10 it gives you a number of options – click on Sign Out. At one time this would have rebooted your computer. Press the Ctrl + Alt + Del keys at the same time. An obvious thing to do is to log out of your account and log in again. We shall provide with fixes for each of these, but if they fail to work for you, then contact us for further help. There are several potential reasons for your Windows 10 Start menu not working as it should. Create a System Restore Point that will return your system to its original position should anything go wrong. Before trying any of these, first, make sure you don’t screw up your Windows system. We have several fixes for this, and which works for you will depend upon the reason for the Windows 10 Start menu not working. Reinstall Sound Card and Video Card Drivers