Video Graphics Doesn’t Work on Lenovo Thinkpad T400 (Resolved)

Lenovo Thinkpad T400 Type 2764 comes with ATI HD 3400 GPU card. If have switched to Windows XP and the video graphics doesn’t work and you’ve got a message ATI card has no driver installed, then you are in trouble. Finding ATI graphic card for XP can be hard time because Lenovo official doesn’t provide laptop drivers for Win XP.

Video Graphics Doesn’t Work on Lenovo Thinkpad T400 (Resolved)

Lenovo T400 Graphic Fix

You might have known that T400 (which comes with original Vista) features switchable graphics. But when you install XP on T400, the machine suddenly don’t support switchable graphics anymore. But don’t worry, since you’ll still be able to get the feature following the steps below:

  1. While booting, go to BIOS by pressing F1 on your keyboard
  2. Select config and choose display
  3. Set the following parameters:
    Default Primary Video Device [Internal]
    Boot display device [Thinkpad LCD] *
    Graphics Device [Discrete Graphics] **
    OS detection for switchable [Disable]

Asterisk Note:

* Change this setting to VGA or DVI if the machine will be used on an Advanced Dock
** Switchable Graphics is a Windows Vista feature only. Set the Serial ATA setting from AHCI to Compatibility mode (this will prevent the BSOD 0×7B error on booting the XP media).

After you have done previous steps, the graphics card will be working fine.

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This entry was posted on Wednesday, August 26th, 2009 at 3:47 am and is filed under Tips & Tricks. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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