https://www.zhihu.com/question/381601945https://cn.bing.com/search?q=%E6%B3%A8%E5%86%8C%E8%A1%A8%E5%88%A0%E9%99%A4%E4%BA%86%E4%BB%80%E4%B9%88%EF%BC%8C%E4%BC%9A%E5%AF%BC%E8%87%B4%E8%BD%AF%E4%BB%B6%E6%97%A0%E6%B3%95%E8%BF%9B%E5%85%A5%E5%AE%89%E8%A3%85%E7%95%8C%E9%9D%A2&qs=n&form=QBRE&sp=-1&lq=0&pq=%E6%B3%A8%E5%86%8C%E8%A1%A8%E5%88%A0%E9%99%A4%E4%BA%86%E4%BB%80%E4%B9%88%EF%BC%8C%E4%BC%9A%E5%AF%BC%E8%87%B4%E8%BD%AF%E4%BB%B6%E6%97%A0%E6%B3%95%E8%BF%9B%E5%85%A5%E5%AE%89%E8%A3%85%E7%95%8C%E9%9D%A2&sc=10-22&sk=&cvid=1C5D51A3B6844AA18BC2EEA1E65F7C33&ghsh=0&ghacc=0&ghpl=每接触一个新电脑的第一步，备份注册表。附上参考文档，未实验过。