Hello, my system has been behaving strangely the past two days. It was working fine this morning but clicking the Windows icon nor the search bat at the bottom left has no respond. Sometimes clicking the Edge symbol launched the browser but not this afternoon. Clicking on files or folders icon on the desktop work. However, clicking x on the top right cannot close the file nor folder. Left clicking and dragging the top of a window also cannot move a window. Force reboot a few times but still the same. It is not a mouse problem as I have tried another mouse. What is wrong and please let me know how to fix it.