Hello guys,

Recently, I have upgraded the operating system of my computer to Windows 8. As I'm not very familiar to this new system, I have some questions here. I wanna set the management in this system. I wanna know how to get rid of the shield signs beside the icons and I hope that during the operation of the computer, there is no prompt information. Are there some harms?

Pls show me some information!

Thanks very much!