Here is a simple solution to fix the problem that pop up windows not working, please try it out.
1.Right click on the Desktop, then select Personalize.
2.After you enter, you'll see Change desktop icons, Change mouse pointers and Change your account picture on the left column. They are normal desktop change items.You can enter into them and change according to your need.
1.Click Startup and type cmd in the searchbox, then double click on cmd.exe.
2.Type gpupdate and press enter, then you can destroy virus on your computer.