Drivers issue for Lenovo u400 after upgrading to Windows 8

I recently upgraded to windows 8 an after that facing driver issue for ATI Radeon graphic card and wifi, and also cypress trackpad software is not working. All the supported drivers provided by Lenovo for windows 8 are fake and none of them are working. I even tried to search for drivers for graphic card from AMD website but unable to find any suitable drivers.
And to my surprise when i called lenovo technical support for help, the representative told that no such upgradation is possible for older system, but in Lenovo wesite it is clearly mentioned that upgradion is possible and they are provinding windows 8 drivers for this model which does not works at all :-(
Kindly some one suggest some workaround for this issue.
Solved!
Go to Solution.

I had the same problems with the Cypress driver after upgrading to Windows. Based on I did I downloaded the Windows 8 driver for the Ideapad U300s and it works GREAT. There were no compatibility issues, shows up in Device Manager etc. It also has and icon on the task bar that responds to the F6 key for disabling. Best yet this driver has a Palm Rejection tab. I set it for heavy and no wild pointer movements so I find I now keep the trackpad enabled. NOTE: the file name of the driver I downloaded and installed is: Ogt102w8. Hope this helps you and can't figure out why Lenovo has a driver listed for the U400 that does not work while this driver works great.

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   - Link to picture
   - Link to picture
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This question was solved.
View Solution.

Hi,
"If the driver is a previous revision install it using the TROUBLESHOOT COMPATIBILITY tool that is part of the Windows 7 OS.
To use the tool, uninstall any drivers for the sound card you show listed in Control Panel/Programs/Uninstall Programs  list.  Delete the Device from Device Manager.
Download the revision of the driver from www.creative.com  website to a folder you've created and placed on your desktop.
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Let the compatibility tool select a possible solution then use its suggestion of TRY RECOMMENDED WINDOWS SETTINGS, if it does not find a solution it will submit only CUSTOMIZE SETTINGS and let you install it as you designate."
The preceding information comes from a Microsoft Windows 7 forum regarding an issue similar to yours.
the information you provided did verify that it is a sound blaster XiFi Extreme card as checked against the Vendor / Device list.
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