Reason: The newly bought Lenovo e431 original WIN8 system. Win8 system is not good use, and silly installed WIN10 preview version, ugly die do not say, also all kinds of driver incompatible, each boot is not compatible--I am a bit neat, see not this, this would like to uninstall incompatible, but can not find the place to unload, Drive Wizard and other tools are unable to install on the win10.
Try1: Install win7 with USB stick
The online approach, coupled with Lenovo's customer service (at least not for my computer), Bois the mess. The most reliable is the following method (first F1 set BIOS, then F12 select boot option)
Http://nc1234.com/html/changjianguzhangjijiejue/2013/1005/145.html
But my machine is not able to recognize U-disk ah ...
Try2: Install with DVD burning
I thought the U disk is the best way, throw a lot of DVDs, did not expect to use Uiso9_pe to burn the system to the DVD (method as follows). Then F12 Select the startup option. Successfully installed Win7.
Http://www.360doc.com/content/12/1013/15/9288681_241233971.shtml
On the WIN8 installation Win7, because of an MBR partition method, a GPT partitioning method, so into the installation, in the format of the disk, you need to SHIFT+FN+F10 call up the command window, the hard disk format into MBR.
Lenovo E431 Win8 System installation Win7