I woke up this morning and got a gray screen with an icon that said safezone. Anyway I got rid of it in google chrome by clicking the wrench, then tools, then extensions. It was there. It was Avast Web rep. I used the little trash can and got rid of it. Before doing this I did notice in control panel programs that Avast installed a new update this morning. I don't think they know it doesn't work. Can't even get to desktop icons from that blank gray desktop. To get rid of the gray screen, click on the little green arrow in that taskbar, then you are back at your desktop.