Windows 8 Modification of Windows 7 requires changes to the BIOS settings, because the WIN8 system preloaded with the ThinkPad notebooks uses a GPT partition, and the Win7 system uses an MBR partition table, resulting in an incompatibility problem. This also led to WIN8 refit Win7 unsuccessful reasons, the solution is also very simple, as long as the BIOS to close the UEFI function can be, the specific methods are as follows.
1, press the Notebook power button, and then keep pressing the F1 key (some fn+f1 key combination), into the BIOS operating interface, in the keyboard select its right button in the security (Chinese meaning safe, safe) option to find "Secure boot" (Chinese meaning Safe boot) option, Enter, switch the first secure boot from "Enabled" to "Disabled";(Chinese means to turn off security startup).
2, press Esc key back to the BIOS main interface, in startup (Chinese meaning start, startup options) under the option to find uefi/legacy boot option, the default state of the new UEFI only mode into the traditional Legacy only mode;
3. Finally press the function key "F10" (or FN+F10 key combination) to save the exit, in this window directly press the notebook keyboard "enter" key to start the BIOS save settings and restart the computer function.
about how to install the system, here is no longer introduced, you can search this site for the relevant detailed tutorials.
Summary: About ThinkPad Notebook pre-installed Win8 win7 system installation Tutorial first introduced here, I hope that friends after reading this article, the ThinkPad notebook BIOS interface other hidden functions and information more understanding, This will reduce unnecessary problems when you install the system to your friends or co-workers.