First, read the English article below.

This is a collection of icons located in the bottom-right corner of your Windows desktop, next to the clock. These icons represent programs that are currently running. If you don't see the Norton icon, click the "▴" button to show all the hidden icons. This will open a small menu of options. Select "Disable Antivirus Auto-Protect". This is the active part of Norton Antivirus. Disabling it will turn off active virus protection. You can choose to disable your antivirus protection for a specific amount of time, until your computer restarts, or permanently. It is not recommended that you browse the internet without active protection enabled. If you're finished performing the task that requires antivirus protection to be disabled, you can right-click on the Norton icon again and select "Enable Antivirus Auto-Protect". 

Now, please write a short abstract for it in Chinese. Abstract:
在电脑的系统盘中找到诺顿图标。 右键点击诺顿图标。 选择持续时间。 重启防护功能。