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      Windows 7 Clean Installation - ThinkPad T420, T420s, T520, W520, X220 and X220 Tablet

      The following instructions explain how to install Microsoft Windows 7 Operating System (OS) on a Lenovo Thinkpad computer with a blank hard drive or a hard drive that will be completely wiped clean during the installation process. (All existing files will be deleted.)

      Note: This install process is based upon default BIOS configurations of the listed Thinkpad systems. This means the OS install will be in standard Thinkpad BIOS hereafter known as legacy BIOS. There will be a separate installation document written purely from a UEFI BIOS configuration. The Lenovo Windows 7 preload is configured for Legacy BIOS in first boot order and UEFI second.

      ThinkPad Setup

      Affected configurations

      Any of the following ThinkPad systems:

           • T420, T420s, T520
           • W520
           • X220, X220 Tablet

      Windows 7 Clean install

      This document will function as the detailed instructions for standalone installs of Windows 7 Lenovo ThinkPad's. This document has the following sections:

      Operating system install
      Device Driver install
      Lenovo Application and Utility install

      Operating system install

      1. Boot the Windows 7 Full install disk (using F12 to select the optical drive as first bootable device if needed).

      2. Click Next to Continue booting.

      3. Click Install Now on the "Install Windows" screen.

      4. In the "License Terms" window, carefully read the license terms. These license terms are very important for Windows 7. Contact Microsoft to clarify any questions or issues. If you agree, click I accept the license terms and then click Next to continue.

      Note: You must agree to the license terms to install Windows 7.

      5. Click Custom install of Windows 7.

      6. Click drive options to format / partition the hard disk drive. Windows 7 will add a small 100 meg or so partition for bitlocker drive encryption.

      7. Click Next to begin file copy.

      8. System will reboot itself after file copy / extraction.

      9. Enter desired user ID and machine name, click next to continue.

      10. Create a windows password if desired, this step is optional. Windows will continue to install and run without a password.

      11. "Type your Windows product key for" windows opens. Enter your 25-character Windows 7 product key, which is located on the Windows 7 installation disk holder or a Windows 7 installation disc package. You can keep the Automatically activate Windows when I'm online option selected, otherwise you will be prompted to activate Windows regularly for the next 30 days, and the activation is mandatory. Click Next to continue.

      12. In the "Help protect your computer and improve Windows automatically" window, select Use recommended settings to continue.

      13. Select your time zone and set your current date and time. Then, click Next.

      14. If the "Join a wireless network" window opens, select a wireless network at your desire. Click Next if you want to use the wireless network, otherwise click Skip to continue. Skip this step if ThinkVantage Access Connections is to be installed.

      15. Windows 7 will be launched.

      At this point there are two methods for Device driver and Application installs. The simplest is to use ThinkVantage System Update to download and automatically install all the required device drivers and applications. This method also ensures that device driver and application dependencies and co-requisites' are installed correctly.

      Click here to download the ThinkVantage System Update.

      The second method is the manual installation of each device driver and application individually. This method is time consuming but does allow for some control over application install paths.

      For existing Windows 7 preloads there exists a "C:\SWTOOLS" folder that contains the original device drivers and apps for a re-install. For those users who purchase a full retail copy of Windows 7 this folder is not available and thus all device drivers and applications must be downloaded individually.

      Below is the folder listing of the Lenovo Windows 7 Preload.

      Windows 7 Preload

      Download each of the required / desired drivers and extract them to the "C:\drivers" folder. This is the default file extraction path if no changes are done. The following instructions presume the default extraction path that is used. There other folders within the "C:\drivers" folder. Make note of each location as each device driver is downloaded and extracted. Some drivers have an option to install each device driver as the file extraction is complete. This method of install is acceptable. Since this option is checked by default, should you choose to install the device driver later, the box should be unchecked prior to clicking Finish.

      Note: Required Lenovo ThinkPad Device Drivers and OSFixes

      The use of only device drivers and fixes supplied by Lenovo should be employed during the install of Windows 7. The use of 3rd party drivers is not supported by Lenovo and issues arriving from the use of non-Lenovo supplied drivers will be referred back to the vendor.

      The remainder of this document is written with the perspective that a copy of \SWTOOLS is available and device drivers and apps will be installed from that folder. Reboots are required after some device driver installs, so reboot when requested.

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      Device Driver install

      The device driver install sequence is dependant on the System Interface Driver install being the first to be installed. This driver has common DLL's that other Lenovo utilities use.


      The bios for each system being installed should be upgraded to the most current for each machine type. There are bios updates for Windows 7 that will be needed. The machine specific bios can be found on the Lenovo support website.

      SMIF (System Interface Driver)

      This driver is installed with the HotKey or OnScreen display driver.

      IMSM (Intel Matrix Storage Manager)

      IMSM driver needs to be installed via INF install via device manager, running install.cmd from "\prepare" folder will result in a file copy error. Locate the "standard AHCI serial ATA controller" entry in device manager and right click to update driver, pointing to \swtools\imsm folder.

      Note: This driver is known as Intel Rapid Storage Technology driver.
      Kindly please select your product first before proceeding to download page.

      Intel Chipset driver




      Intel's AMT technology

      \swtools\amt\ipt\setup_intel_ipt.exe for Intel's Identity Protection Technology.
      Check box to "Install Intel Control Center".

      APS (Active Protection System)


      Power Manager Driver and Utility


      Select reboot later and immediately install Power Manager

      Video Graphics subsystem drivers


      The video subsystem is Intel HD or Nvidia HD graphic depending on specific model.

      Intel Ethernet

      \swtools\drivers\ethintel\apps\prosetupdx\win32 or win64\dxsetup.exe

      Monitor ICM file

      Open device manager and update the Generic PNP monitor listed, by right click and update device driver.

      Point installer to "monitor" folder, click Close to complete install.

      Communications Utility and Camera driver




      Modem driver install will launch NetWaiting app install, then digital line detect applet install.
      Note: Some models do not have a Modem as standard equipment.



      Click Restart later, then run Setup from "UNAVUtil" folder.

      Bluetooth (on select models)


      FingerPrint Reader (FPR)


      Thinkpad Device Experience

      \swtools\apps\Lenovo Thinkvantage Tools\deinstall_tp.exe

      Lenovo Rapid Boot


      Multi-Card Reader


      Intel Wireless Network Drivers


      USB 3.0


      Note: USB 3.0 is a feature of select T420s models. The USB 3.0 port is readily recognized by the Blue Plastic tab.

      Wireless Display

      Wireless display is a video technology that allows for wireless video transmission to a TV monitor.
      To learn more about Intel Wireless Display: Intel WiDi and Intel Pro Wireless Display



      Installs the BingBar toolbar for Internet Explorer.

      BizTree (Business in a Box)

      Note: On Select models only.

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      Lenovo Application and Utility install

      Lenovo provides the necessary files and instructions to manually add Lenovo engineered fixes and updates in the osfixes folder within the swtools folder.
      These individual updates / fixes are listed below. All of these updates are on a Lenovo Win 7 preload.
      If the function of each fix or update is required / desired then follow the instructions given below with full instructions provided within the readme file of each respective update folder.
      There exists a folder within the \SWTOOLS folder called READYAPPS. This folder contains various Lenovo ThinkVantage Technology applications and Utilities.
      These include:

      Access Connections \accon
      Client Security Solution \css
      Rescue and Recovery \rnr
      Lenovo Toolbox \ltt
      AutoLock \autolock
      SimpleTap \simpletap
      System Update \tvsu
      ThinkPad User Guide \userguide
      Warranty Information \wrnty

      Other applications reside in the ReadApps folder but those apps are installed during device driver install listed previously in this document.

      In the \SWTOOLS folder is a folder listed as APPS which contain other Lenovo preloaded applications. These applications include but are not limited to:

           • Adobe Acrobat Reader ver 9.4
           • Corel Burn Now CD/DVD disk recording software
           • Corel DVD Movie Factory
           • Intervideo WinDVD for DVD movie playback
           • Adobe Flash Player
           • Lenovo Message Center Plus
           • Lenovo ThinkVantage Tools

      Other Lenovo utilities:


      Enable Wake On LAN from Sleep for Energy Star V4.

      Run "ctrlwol_inst" to enable, "ctrlwol_uninst" to disable.


      Disable to load IMSS (Intel® Management and Security Status Application) in tasktray for Windows 7.

      Run "DisIMSS.reg" to disable to load IMSS icon in the tasktray.

      More detailed information can be found in the readme file for DisIMSS.


      Fix for Issue of HDD with HDP Detection for Windows 7.

      This package contains a fix for an issue that Password-protected secondary hard disc drive (HDD) is not detected in Computer after resume from sleep. To Install:

      • Open "Command Prompt" with administrator priviledged rights.
      • Move to the "C:\SWTOOLS\OSFIXES\DISKUPDT"
      • Type schtasks /create /xml C:\SWTOOLS\OSFIXES\DISKUPDT\DiskUpdate.xml /tn DiskUpdate
      • Reboot the computer.
      • Make sure that the task "DiskUpdate" is created in "Task Scheduler".


      Registry Patch to arrange icons in Devices and Printers folder of Windows 7 and
      This registry patch is to hide icons for internal devices that appear in "Devices and Printers" folder.
      To install, right click on "DevORApply.inf" file and select install.


      Registry Patch to disable Wake On WLAN feature in WiFi adapters to install:

      1. Open "command prompt" in administrator mode.

      2. Move to the folder that contains files in this package.

      3. Run "WOWLANdisable.vbs".

      4. Reboot the system.

      OSFIXES (operating system fixes)

      There is also a folder under the SWTOOLS folder called OSFIXES. This folder contains required Microsoft HotFixes and QFE's for the correct function and operating of the Thinkpad computer system. Each of these patches needs to be installed as part of any mass image deploy or custom image build.


      Windows Device manager after base OS install.

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      • Alias ID: MIGR-77353
      • Document ID: HT082396
      • Last Updated :14 Oct 2016
      • © 2016 Lenovo