I am using a Dell Latitude D400 laptop and have the same chipset mentioned in the title of this topic. I am running Windows Vista on it without Aero feature. The problem with it is that only the internal monitor is working even after checking the "Extend the desktop onto this monitor" and "This is my main monitor" for the second (external) monitor. This used to work fine in Windows XP but not anymore in Vista. I have tried looking for some driver on the Intel website but cannot find it. Is there any fix to this problem?
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