Lenovo Consumer desktop and one-machine pre-installed Win8 modified Win7

Knowledge Point Analysis:

Currently, Lenovo's desktop and All-in-one Windows 8 is a combination of a uefi+gpt hard drive and a safe boot, but currently no Windows system other than window 8 supports this mode, so if you need to retrofit other systems, such as Windows 7, must work in the traditional bios+mbr mode.

If you do not modify any of the settings, you will not be able to boot the other operating system properly from the CD.

The following is a detailed procedure for the factory pre-installed Windows 8 modified Windows 7.

For Windows 8 without a Start menu and other traditional interfaces, resulting in the use of inconvenience problems, Lenovo launched the Classic Start menu tool! Restore the original Windows 7 style on the basis of keeping Windows 8 advanced features.

Currently, Lenovo's desktop and All-in-one Windows 8 is a combination of a uefi+gpt hard drive and a safe boot, but currently no Windows system other than window 8 supports this mode, so if you need to retrofit other systems, such as Windows 7, must work in the traditional bios+mbr mode.

If you do not modify any of the settings, you will not be able to boot the other operating system properly from the CD.

The following is a detailed procedure for the factory pre-installed Windows 8 modified Windows 7.

　Special Reminders:

1. This operation will cause all data on the hard disk to be emptied, including one-click Restore function will be cleared, if you need to restore the Windows 8 system and one-click Restore function, you need to send to the service station operation, 1 years free. (You need to delete all of the original partitions when converting a GPT hard drive to an MBR hard disk)

2. You must use a genuine installation CD when you install an operating system such as Windows 7 so that when the partition is recreated, the installer automatically converts GPT to MBR and do not repartition the partition using the Ghost disc or the Third-party partitioning tool. This can result in unpredictable situations where the system does not install properly or does not boot properly.

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

4. Because many models already have no windows 7 32bit drivers, it is recommended that you install the Windows 7 64bit system.

5. Please note that the above model can be installed Windows 7 system, but does not represent all drivers Lenovo website can provide download.

　　Support Model:

This document is only available for Lenovo's consumer desktop computers and All-in-one computers that are shipped with Windows 8/windows 8.1

　　Erazer Series:

Erazer D215, Erazer D230, Erazer D305, Erazer D315, Erazer T410, Erazer T430, Erazer X510, Erazer X700

　　Ideacentre Series:

Ideacentre K410, Ideacentre K415, Ideacentre K430, Ideacentre K450, Ideacentre Q190

　　Lenovo Series:

Lenovo H415, Lenovo H425, Lenovo H430, Lenovo H435, Lenovo H505, Lenovo H505s (home Hyatt S505), Lenovo H515, Lenovo H515s (home Hyatt S515), Lenovo H520, Lenovo h520g, Lenovo H520s (Home Yue S520), Lenovo H525s (home Hyatt S525), Lenovo H530, Lenovo H530s (home Hyatt S530), Lenovo H535, Lenovo h535s (Home Yue S535), a new dream of H515, New Dream H530, New dream H535

Ideacentre, Lenovo series integrated Machine

　　Ideacentre Series:

Ideacentre A520, Ideacentre A530, Ideacentre A720, Ideacentre A730, Ideacentre B340, Ideacentre B345, Ideacentre B350, Ideacentre B355, Ideacentre B540, Ideacentre B545, Ideacentre B750, Ideacentre Flex, Ideacentre Horizon 27

　　Lenovo Series:

Lenovo C240, Lenovo C245, Lenovo C255, Lenovo C340, Lenovo C345, Lenovo C355, Lenovo C440, Lenovo C445, Lenovo C455, Lenovo C540

　　Operation Steps:

First, BIOS settings (different models of the BIOS interface may be slightly different, please refer to the actual model)

1. Constantly click on the keyboard on the F1 key to enter the BIOS interface,

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

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

Press the top arrow on the keyboard (↑) to select "Disabled".

Press the ENTER key on the keyboard to change the setting.

(The OS optimized Default option can be understood as switching between UEFI and traditional bios);

2. Prompt warning, select "Yes", press ENTER (enter) to confirm;

3. Press the F9 key on the keyboard, the Restore BIOS Defaults dialog box, select "Yes", press ENTER (enter) to confirm;

(The default value of the Uefi restored by the F9 key when the OS optimized default option is enabled, the default value of the traditional BIOS restored by the disabled key when the OS optimized default option is F9)

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

Select CSM option, press ENTER on the keyboard, set CSM to Enabled, and press ENTER (enter) to confirm; (CSM: Compatible support modules Compatibility Support module)

5. Press the lower button on the keyboard (↓) Select to boo tmode option, press the keyboard on the Return key (enter) appear settings, press the keyboard down to the button (↓) Select to "Legacy only, press ENTER (enter) to confirm;"

6. After the revised situation, the following figure:

7. Finally, press the F1 on the keyboard, the Save dialog box appears, select "Yes", press ENTER to confirm, save exit, the computer will be restarted.

　　Second, the installation system

Press F12 button on the Boot selection menu to select the CD-ROM or u disk normal installation system can be.

Special attention:

A different place than a regular system installation

After entering the Windows 7 system partition screen, you need to click each partition individually, then click Delete;

After you delete all partitions, click New, recreate the new partition, (by the MBR hard drive, you will only be able to split 4 primary partitions in the system installation domain, and if you need more partitions, partition the system after the system is installed)

After the partition is created, the partition is all formatted, the format is finished, select the partition that you want to install the system, click "Next" to install the system.

Remind again: Do not use ghost or third party partition software partition installs the system, otherwise can cause not to start normally or other unusual problem!

　　Iii. handling of special problems

Problems you may meet:

1. Installation program can not partition or partition after the next installation can not click;

2. Normal partition can be installed, but when Windows starts, in Windows logo execution machine;

3. Prompt for disk function error.

4, other unknown issues

　　Workaround:

1 Enter the Windows 7 system installation of the first screen, press the keyboard "Shift" + "F10" key to start the CMD command line mode window;

2 in the CMD Command Line window directly enter the "DiskPart" command, and then press "enter" key, will automatically enter the DiskPart mode;

3 Enter the DiskPart mode, and then enter the "list Disk" command and press "enter" key to confirm the number and location of your hard disk, the following figure in the computer only a hard disk;

4 Enter the "select Disk 0" command and press the "Enter" key to select your hard drive;

5 Enter the "clean" command and press "enter" key to remove all the partitions and data on your hard drive;

6 Enter the "Convert MBR" command and press the "enter" key to convert the hard drive's split mode from GPT mode to MBR mode;

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

8) After the operation is complete, please click on the "Red Fork" in the upper right corner of the Windows 7 system Installation's first screen window, then select "Yes" in the pop-up window to restart your computer, when the computer restarts to "Lenovo" logo screen, and press the computer keyboard "F12" Key into the computer's boot settings interface. At this time the CD drive tray of your computer is ejected, the CD-ROM drive tray is pushed back after the genuine Windows 7 operating system CD is selected, and the "CD/DVD" Item in the interface is pressed and the "enter" key is pushed to enable the CD-ROM drive to boot. Then follow the previous steps to operate the partition installation system. (You do not need to delete the partition again, because the partition has been removed before restarting the computer.) )