1, right-click on the desktop, Arrange Icons By, uncheck Auton Arrange and Align to Grid
2, if not enough, right click on Task bar --- Properties --- Start Menu --- Customize ---- Advanced, find Enable dragging and dropping, checked or not, and if not, then the hook; If there after the cancellation, close the Properties window, then open, then the hook.
3, if not, click on Start --- Run, enter sfc /scannow Repair system, you may need to install the system tray