Martin, thank you for your reply. I apologize for taking so long to respond, I was out of town. My graphic driver (Intel 946gz Express) has the latest driver. When I look at the problem report it just says that "Desktop Windows Manager is disabled." (The service is not disabled, it just stops when I attach the USB graphics adapter.) Thanks for any assistance.
Here's the log info for when DWM stops:
Log Name: Application
Source: Desktop Window Manager
Date: 10/28/2009 8:29:27 AM
Event ID: 9020
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer:
Description:
The Desktop Window Manager has encountered a fatal error (0x88980406)
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Desktop Window Manager" />
<EventID Qualifiers="49152">9020</EventID>
<Level>2</Level>
<Task>0</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2009-10-28T12:29:27.000000000Z" />
<EventRecordID>11104</EventRecordID>
<Channel>Application</Channel>
<Computer></Computer>
<Security />
</System>
<EventData>
<Data>0x88980406</Data>
</EventData>
</Event>