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3 Posts

09-15-2008

NY

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T400 Switchable Graphics not working after reinstall

2008-09-15, 3:10 AM

So here's my problem:

Got my T400 w/ switchable graphics.  Decided to do a clean install of Vista Business 32bit.  After the install, the ATI graphics won't work.  Device Manager shows ATI Mibility Radeon HD3400 Series and has an exclamation matk on it.  Opening its properties reveals this error: "This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)".  I am also unable to switch into dedicated graphics. I tried all sorts of combinations of uninstalling and reinstalling the display drivers.  What am I missing here?


Thanks for any help.

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4096 Posts

01-05-2008

DE

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Re: T400 Switchable Graphics not working after reinstall

2008-09-15, 8:09 AM

Hello,

 

look here a Vista clean install guide.

On Notebookreview.

 

Kind regards

Andreas

Message Edited by Agotthelf on 09-15-2008 10:09 AM

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2 Posts

09-08-2008

Maryland

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Re: T400 Switchable Graphics not working after reinstall

2008-09-15, 20:55 PM

Hey had the same problem. Tech support didn't know either... Anyway decided to look for another driver today and found this one.

 

Go to lenovo's site under support click on the LENOVO RSS FEED box then select the system type T400 you should get a listing of drivers. . the file name is 7vd532ww.exe

 

Just make sure any old ATI software is uninstalled on your machine before installing this one!! 

 

Here is the link for that page

 

http://download.boulder.ibm.com/ibmdl/pub/pc/pccbbs/mobiles/thinkpad_t400.rss

 

 

 

 

 

 

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3 Posts

09-15-2008

NY

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Re: T400 Switchable Graphics not working after reinstall

2008-09-16, 6:51 AM
Thanks guys...that guide was helpful.  However, my only problem was the fact that i didn't have SP1 installed.  Once I installed that, everything worked flawlessly.  SP1 IS REQUIRED.

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