VGA Adapter Not Working in Windows 7 (64 bit)

I was running Win7 (64 bit) through bootcamp and could not get the VGA adapter to work.  I've tested it and it worked fine while under OS X.  In Windows 7, it could detect the secondary display, but my monitor no has signal.  I was re-install windows, but no work anytime. Anyone else encountered this issue and have a fix?
I have a early 2011 13" Macbook pro - 2.3 GHz/4GB RAM

But I have it worked fine a week ago! I think that stopped working after firmware update...

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