Lenovo pre-assembled WIN8 system changed to Win7 operation procedure and precautions

Lenovo Consumer desktop and all-in-one machine pre-assembled WINDOWS8 retrofit Windows7 procedures and FAQs

Prerequisite Description:

Currently, Lenovo's desktop and all-in-one machine with Windows 8 is a combination of uefi+gpt hard drives, and a secure boot is turned on, but currently other Windows systems other than Windows 8 do not support this mode, if you need to modify other systems, such as Windows 7, must work in the traditional bios+mbr hard drive mode. If you do not make any settings, when the user starts pressing F12, the boot menu will be found to be unable to detect a USB flash drive or a CD-ROM boot device, the system cannot be installed properly. There are also cases where users who have installed the system directly using ghost or third-party tools partition may not be able to boot or install properly.

This document is only available for Lenovo desktop PCs and all-in-one PCs that are shipped with Windows 8 preinstalled
Supported Models:
Ideacentre b540/ideacentre b545/ideacentre b540p//ideacentre b340/

Lenovo C340/lenovo C445/lenovo C345/lenovo C440/lenovo c540/
Ideacentre A720/
Ideacentre K415/ideacentre K410/
New Dream f2999/new Dream f4039/new Dream f415/new Dream h505/new Dream f3152/new Dream h520/
Home Yue s520/Home Yue S525/lenovo h430/lenovo H415/et cetera.

Special Reminders:

1. the following actions cause all data on the hard disk to be emptied ( GPT the hard drive is converted to MBR The hard drive needs to delete all the original partitions), all data on the hard drive including the Lenovo one-click Recovery function will also be cleared , If you need to restore the factory pre - Windows 8 system and one-click Recovery function , you must be sent to the service station operation , 1 free return to factory status during the year.

2. installation Windows7 such as the operating system must use the genuine installation CD, the original system during the installation process, delete the partition re-created, the installation program will automatically GPT converted into MBR, Do not use Ghost disc or third-party partitioning tool to repartition the partition, which may cause unpredictable conditions such as a system not installing properly or not booting properly.

3. If you have data on your hard disk, you must back up your entire hard drive, not just C the data for the disk (see the first article for reasons)

Procedure one, BIOS settings (different models of the BIOS interface may be slightly different, please take the actual model)

1. Press the F1 key on the keyboard at startup to enter the BIOS interface,

Press the right ARROW key (→) on your keyboard to select "Exit"

Press the DOWN ARROW key (↓) on the keyboard to select "OS Optimized Default",

Press the upper-pointing key (↑) on the keyboard to select "Disabled".

Press ENTER on your keyboard to change the settings.

2. Prompt for warning, select "Yes" and press ENTER toconfirm;

3. Press the F9 key on the keyboard to restore the BIOS default dialog box,

Select "Yes" and press ENTER to confirm

(When the OS Optimized default option is enabled, the Uefi defaults are restored by pressing the F9 key,
OS Optimized default option for disabled, press F9 key to restore traditional BIOS defaults)

4. Press the LEFT ARROW key (←) on the keyboard to enter the startup interface

Select the CSM option and press ENTER on the keyboard

Set "CSM" to "Enabled" and press ENTER to confirm
(CSM: Support module compatible with compatibility);

5. Press the DOWN ARROW key (↓) on the keyboard to select the Boo tmode option

Press ENTER on your keyboard to appear in the Settings dialog box

Press the DOWN ARROW key (↓) on the keyboard to select "Legacy only"

Press ENTER to confirm;

6. The modified state such as:

7. Modify the Lenovo server engine Lenovo service engines in the BIOS to be set to off

Modify startup inside Boot 丿 num-lock Status to turn the boot lock off too

8. Finally, press F10 on the keyboard,

The Save dialog box appears, select "Yes",

Press ENTER to confirm, save exit.
The computer will restart

Second, installation system
Press the F12 button on the Boot Selection menu, select the optical drive or USB drive to install the system properly

Special attention:
In a different place from the conventional system installation

After entering the WINDOWS7 system partition screen, you need to click each partition separately, then click Delete,

After you have removed all the partitions, click New to recreate the new partition. ( restricted by MBR hard disk, you can only separate 4 primary partitions in the system installation Interface , if you need more partitions, please partition the system after the system installation is complete)

After the partition is created, all the partitions are formatted, and after the formatting is complete,

Select the partition where you want to install the system, and click "Next" to install the system.

Iii. handling of special problems
Questions you may encounter:
1. The installation program cannot be partitioned or partitioned and cannot be clicked for next installation;
2. Normal partition installation, but in Windows startup, in the Windows logo execution machine;
3. Prompt for disk function error.
4, other unknown issues

Workaround:
A. On the first screen to enter the WINDOWS7 system installation, press the "Shift" key + "F10" key on the keyboard to start the CMD command line mode window:

B Enter the "diskpart" command directly in the CMD Command Line windowand then press the "enter" key to automatically enter the diskpart mode:

C After entering the diskpart mode, enter the "list Disk" command and press "enter" key to confirm the number and location of your hard disk, such as the computer in the only one hard disk, in the location:

D Enter the "select Disk 0" command and press the "Enter" key to select your hard drive:

E. Enter the "Clean" command and press the "enter" key to remove all partitions and data from your hard drive:

F. Enter the convertMBR command and press the "enter" key to convert the hard disk's sub-mode from GPT mode to MBR mode:

G Enter the "exit" command and press "enter" key to exit DiskPart mode, then "Exit" command again and press "enter" key to exit cmd command line mode:

H. After the operation is completed, please click on the "Red Fork" in the upper right corner of the first screen window of the WINDOWS7 system installation, then select "Yes" in the pop-up window to restart your computer and restart the computer to "Lenovo" Logo screen, and press the "F12" key on the computer keyboardto enter the computer's boot settings interface. At this time, the CD-ROM tray of your computer pops up and pushes the drive tray back into the genuine Windows7 operating system CD, selecting the "CD/DVD" item in the interface and pressing the "enter" key To enable the optical drive to boot. Then follow the previous steps to install the system (but you no longer have to delete partition operations, because the partition has been completely deleted before restarting the computer).

Lenovo pre-assembled WIN8 system changed to Win7 operation procedure and precautions