1. Start Windows 7 32 bit 64 bit and logon with administrative privileges.
2. Double-click the driver package to extract it to your hard drive.
3. Click Start, select My Computer, and avigate to the location where the package was extracted in step 2.
4. Double-click each windows update module to start the installation. Follow the instructions on the screen.

           Please refer to knowledge tip on Microsoft website for details about this hotfix.
           Please click the following link for details:

           http://support.microsoft.com/kb/2496820

• IdeaPad P580
• IdeaPad N580, N581
• IdeaPad S300, S400, S400u, S405
• IdeaPad U510
• IdeaPad Y400, Y500

• Microsoft Windows 7 32-bit, 64-bit