This package installs the software (Display and Audio drivers) to enable the following devices.

	Supported ThinkPad Systems
	Supported Operating System
	Summary of changes
	Installation Instructions
	Uninstallation Instructions
	Determining which version is installed

• T420, T420i, T420s, T420si
• T520, T520i
• W520

• Microsoft Windows 7 64-bit

Where:

• < > NVIDIA driver / Intel driver version
• [Important] Important update
• (New) New function or enhancement
• (Fix) Correction to existing function

Version <9.18.13.1100 / 8.15.10.2538>

• (Fix) Fixed a possible security exploit in NVIDIA's display driver service.
• (Fix) Fixed a security vulnerability in NVIDIA's software services.

Version <8.17.12.9620 / 8.15.10.2538>

• [Important] Disabled the nVidia Auto Update function. 
  Note: To disable the nVidia Auto Update function correctly, if your computer has installed the version 8.17.12.7658 or older, uninstall it first before installing this software.

Version <8.17.12.7658 / 8.15.10.2538>

• (Fix) Fixed an issue where the screen might be corrupted in NVIDIA control panel using Setup Multiple Displays.
• (Fix) Fixed an issue where the screen might get black when setting to duplicate mode if some analog VGA cable or analog external monitor was used.

Version <8.17.12.7593 / 8.15.10.2538>

• (Fix) Fixed an issue where LCD resolution changes to native resolution after AC adapter is unplugged. This happens after user sets a lower resolution then uplugged AC adapter.

Version <8.17.12.7593 / 8.15.10.2321>

• (Fix) Fixed an issue where the external monitor that was supported up to 2560x1600 was only set up to 2048x1536.
• (Fix) Fixed an issue where Internet Explorer 9 (IE 9) might crash while loading some web pages.

Version <8.17.12.6871 / 8.15.10.2321>

• (Fix) Fixed an issue where the resolution list of NVIDIA Display Control Panel might be blank after re-docking.

Note:
Please refer to the README file under the "File details" section for a complete list of changes fixed by this driver update.

Note:

• If your computer runs satisfactorily now, it may not be necessary to update the software. To determine if you should update the software, refer to the Determining which version is installed section.

This section assumes to use Internet Explorer and Windows Explorer.

[Downloading file]

1. Click once on the underlined file name. Once this is done, some pop-up windows will appear.
2. Follow the instructions on the screen.
3. In the window to choose Run or Save, click the Save button.
4. Choose the folder you would like to download the file to and click the Save button. A different window will appear and the download will begin and complete. Once the download has completed, there may or may not be a message stating that the download completed successfully.

[Extracting file]

5. Make sure to be logged on with administrator account.
6. Locate the directory where the file was downloaded.
7. Locate the file that was downloaded and double-click it.
8. Follow the instructions on the screen.
9. In the "Select Destination Location" window, click Next. If you would like to select a different folder, click Browse.
10. In the "Ready to Install" window, click Install. All the necessary files will be extracted to the folder selected in the step 9.

[Installing files]

11. Make sure the checkbox next to "Install ..... now" is checked and click Finish.
12. Follow the instructions on the screen to complete installation and restart the computer.

Finally delete the file saved in Step 4.

This section assumes to use Windows Explorer.

1. Refer to the "Manual Install" section, and download and extract the file.
2. In the step 11 of the "Installing files" section, uncheck the checkbox next to "Install ..... now", and then click Finish to cancel installation.
3. Locate the folder where the files were extracted selected in the step 9 of the "Installing files" section.
4. For NVIDIA, locate the NVIDIA folder.
   For Intel, locate the Intel folder.
5. Double-click the SETUP.EXE file.
6. Follow the instructions on the screen to complete installation and restart the computer. If "Hardware installation" or "Software installation" window appears, click Continue Anyway.

Note: This is for system administrators' use only.

1. Refer to the "Manual Install" section, and download and extract the file.
2. In the step 11 of the "Installing files" section, uncheck the checkbox next to "Install ..... now", and then click Finish to cancel installation.
3. At the command line, execute setup.bat with the -s option.
   Example: [Path where the files were extracted]\setup.bat -s

Note:

• Follow this order to uninstall both NVIDIA and Intel software. If Intel software is uninstalled first, the screen will become blank in the middle of the uninstallation of Intel software and be blank until the next restart.

1. Uninstall NVIDIA software.
   Refer to the "Uninstaling NVIDIA Software" section.
2. Uninstall Intel software.
   Refer to the "Uninstalling Intel Software" section.
3. Restart the computer.

[Uninstalling NVIDIA Software]

1. Start Windows and logon with an administrator account.
2. Click Start, then click Control Panel.
3. Make sure View by Category is selected, and click Uninstall a program.
4. Select NVIDIA Drivers, and click Uninstall or Uninstall/Change.
5. Follow the instructions on the screen to complete uninstallation.

[Uninstalling Intel Software]

Note: The utilities should be removed as well if they were installed with the Intel software.

1. Start Windows and logon with an administrator account.
2. Click Start, then click Control Panel.
3. Make sure View by Category is selected, and click Uninstall a program.
4. Select Intel(R) Graphics Media Accelerator Driver, and click Uninstall or Uninstall/Change.
5. Follow the instructions on the screen to complete uninstallation.

1. Click Start.
2. Right-click Computer, and then click Properties.
3. At the left pane, click Device Manager.
4. Double-click the Display adapters category.

[NVIDIA Graphics Driver]

5. Double-click either of the following devices.
   
   • NVIDIA NVS 4200M
   • NVIDIA Quadro 1000M
   • NVIDIA Quadro 2000M
6. Click the Driver tab.
7. Check Driver Version.
8. Click Cancel.

[Intel Graphics Driver]

9. Double-click Intel HD Graphics.
10. Click the Driver tab.
11. Check Driver Version.

For more details on nVidia Optimus Technology information such as following, please refer to the text file under "Reference Information" section:

• Supported display devices
• Display topology
• Dual adapter clone
• How to configure dual adapter clone