Windows Server 2008 Std Upgrade - will not boot

I have a major problem.  We had two domain controllers.  One was on a very old machine that would not be able to be upgraded from Win2000 Server to Windows 2008 Std Server.  Performed a dcpromo to remove active directory and all went well, didn't get any errors.

On the other domain controller which was Windows Server 2003 Std, upgraded to Windows Server 2008.  The upgrade appeared to be going smoothly and the progress bar appeared to have completed.  After the final reboot, the machine will not boot, no error messages.  Just a black screen with the words Microsoft Corporation on it and a constant scrolling green bar banner.

Does anyone have any suggestions?  Exchange, which is hosted on another machine and is also not functioning.  Probably due to the fact that there is no AD at the moment!!!

Thanks in advance for anyone's help!!!
curtconnerAsked:
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leegclystvaleCommented:
Do you have any USB devices connected? If so remove whilst booting. Also try and disconnect CD drive on server if present. Both sound ridiculous, but I have had this twice on my servers after being driven barmy by the problem.
Just a suggestion to rule out.
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AnthonyP9618Commented:
If not any USB storage, what about SAN, NAS, or iSCSI storage devices attached?  Usually, when a computer hangs on that screen it's usually initializing storage devices and removing them should get you past that screen.
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curtconnerAuthor Commented:
Booted into safe mode and it also hung on a specific driver.  Found that it was actually my SCSI card that didn't have a driver available on the windows 2008 server CD.

Was able to rollback the install and rebooted all in house servers so that everything including Exchange and BES are working again.  

Probably loading the drivers during the upgrade will let the upgrade finish correctly!!!!
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leegclystvaleCommented:
Yes it would help :o)
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AnthonyP9618Commented:
Cool, let us know how it goes.
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Windows Server 2008

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