EFI Network 0 for IPv4/IPv6 Boot Failed的解决方法：
我的电脑出现这种情况，查了好多方案写的都是大同小异，不解决问题。按这个操作后立刻就进入系统了。收藏下来备用，懒得翻译了，大家凑合看。
This problem is common for those as well who try to install Windows 7 on a machine that is intended to run Windows 8.For that kind of case,hopefully there is a solution.
You need to set the BIOS to load in legacy mode since the laptop is configured for Windows 8.Follow the steps below to load Windows 7.
1.Make sure that the laptop is turn off.
2.For Laptops,from the OFF state,press the NOVO button or press the power. button and start tapping the F2 button OR FN+F2.
3.On the Novo Button Menu,using your arrow keys,select"BIOS Setup".
4.Using arrow key,Go to"Boot"or"Startup"tab.Boot Mode should be changed to"Legacy Support"or"Legacy".
5.Using the arrow key,go to the"Exit"Tab.
6.On Exit Tab,highlight"OS Optimized Default"then press Enter.
7.On the pop up box menu,select"Other OS".
8.Then highlight Load Default Settings and press Enter.You will get another pop up box.Select Yes.
9.Highlight Exit Saving Changes then press Enter.Then select Yes in the confirmation box.
If youve set up Windows 7 properly then it should start loading.
到此，问题就解决了。
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