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RoxyT400
What's DOS?
Posts: 2
Registered: ‎06-20-2009
Location: UK
Views: 1,328
Message 1 of 3

SM Bus Controller & ATI Radeon HD 3400 Device Manager problem

Hello All!

 

I am posting in the hope that someone can help me. I have installed vista ultimate on my T400 and have managed to install most of the drivers however I am still haveing a problem with 2 icons in my device manager.

 

There is an exclaimation mark on my SM Bus Controller & I have 2 display drivers one is comming up as Stadard VGA which is fine but the Other is a Radeon Mobility HD 3400 which also has an exclaimation mark on it.

 

Could someone please help me resolve this issue.

 

Many thanks

 

Roxy

RoxyT400
What's DOS?
Posts: 2
Registered: ‎06-20-2009
Location: UK
Views: 1,316
Message 2 of 3

Re: SM Bus Controller & ATI Radeon HD 3400 Device Manager problem

Hi Guys,

 

I have solved the SM Controller problem, by installing the chipset drivers. However I still have the ATI Radeon HD 3400 conflict in device manager with the Standard VGA adaptor. The only way around it is that i disable the switchable graphics and only use descrete graphics. Is this the correct way to solving this or can someone please shed some more light on this issue.

 

 

Many thanks

 

 

Roxy

meh
Token Ring
Posts: 26
Registered: ‎11-26-2008
Location: Vancouver BC
Views: 1,282
Message 3 of 3

Re: SM Bus Controller & ATI Radeon HD 3400 Device Manager problem

Install the latest Switchable Graphics drivers from Lenovo.

Alternatively, use ThinkVantage System Update to get everything in one fell swoop.

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