[computer China original] in Lenovo desktop and notebook win8 system modified win7, xp tested, confirmed. However, there is no guarantee that other people can successfully install without any problems according to this procedure. (Using u disk pe installation or CD pe installation) First, the bios modification, if not modified, then we may not be able to enter the u disk pe or CD, but also after the entry, restore the black screen, and malfunction. So this step is very important. The main modification of bios is to turn off the default value of uefi and return to the default value of the traditional motherboard bios. First, the BIOS settings (different models of the BIOS interface may have subtle differences, please refer to the actual model) 1. Start by constantly clicking the F1 button on the keyboard, enter the BIOS interface, press the right arrow key on the keyboard (→) Select to <;Exit” press the down arrow key (↓) on the keyboard to select <OS Optimized Default", press the up arrow key (↑) on the keyboard to select “Disabled”. Press the Enter key on the keyboard (Enter) to change the settings. (The OS Optimized Default option can be understood as a switch between UEFI and legacy BIOS); 2. Prompt warning, select “Yes”, press Enter to confirm; 3. Press F9 on the keyboard to restore BIOS defaults. Dialog box, select “Yes”, press Enter to confirm (when OS Optimized Default is Enabled, press F9 to restore the default value of UEFI, when OS Optimized Default is Disabled, press F9 to restore the tradition. BIOS default value) 4. Press the left arrow key (←) on the keyboard to enter the Startup interface to select the CSM option, press the Enter key on the keyboard (Enter) to set “CSM” for ”Enabled”, press Enter (Enter) Confirm (CSM: Compatibility Support Module); 5. Press the down arrow key (↓) on the keyboard to select the Boot tmode option. Press the Enter key on the keyboard (Enter) to display the settings dialog. The down arrow key (↓) is selected to “Legacy Only'; press Enter (Enter) to confirm; 6. The modified state is as follows: 7. Finally, press F10 on the keyboard to display the save dialog box. Select & ldquo; Yes & rdquo ;, press Enter (Enter) to confirm, save and exit, the computer will restart. This step needs to look at the specific model, and we have only taken one example. Second, after the setup is complete, restart, according to the prompt, press F12, enter the selection u disk boot or CD-ROM boot and so on. (The prompt may be Lenovo's logo, or other tips. But you can press F12 if you can restart.) Here we first select u disk pe to enter the system. After entering, we may find that we can't see the hard disk, or we can't partition it. It may need to be done here. Two modifications. (The hard disk interface mode may not be modified) 1. Modify the interface mode of the hard disk, it may need to be modified to IDE (found Lenovo notebook desktop, all machine can be modified) 2, convert the hard disk mode, change to mbr mode . There are a variety of methods to modify here, Method 1 http://www.dnzg.cn/dnjq/cy/201308_35464.html Method 2pe inside diskgenius (generally this partition software, this PE system comes with most), will be existing The partitions are all deleted. (I haven't tried to delete it without effect ……. Because the machine I'm having problems is a new machine, there is nothing to save.) On the disk, select “file”, select “ convert partition The table type is MBR format & rdquo;, the conversion is completed, save it in this step, otherwise it has no effect. Third, in the second step we re-partition, after the partition is completed, we restore the system (win7, xp) restore and restart the installation driver can be used normally. The original site, reproduced the source http://www.dnzg.cn/sys/Win8/201308-35465.html