怎么重装系统

How do I reinstall the system

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1
我怎么重装系统工具套件在我的电脑上？
How do I reinstall System Utilities Suite on my computer?
2
windows文件夹：永远也没必要备份windows文件夹，因为你怎么都要重装系统了，备份这个有个p用啊。
Windows: There's almost never a reason to backup your Windows directory, as you're going to have to reinstall the whole thing anyway, so this backup will likely do you no good.
3
我该怎么办？重装系统吗？
What should I do? Should I reinstall the system?

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