Computer win8.1 system, recently opened the window is not a moment is automatically turned grey, become the active window, only the left key click to continue to work

CodePudding user response:

Check if there is any abnormality in the computer software, some software/plugin will generate a transparent window cover your current window and judgment method is that the window is gray, press the Alt + f4, will not be reactivated

CodePudding user response:

Right-click the calculator and see if it needs to be activated?