Windows server 2012 hangs on splash screen after reboot

I have a new server and have just spent ages configuring it. The system installed shed loads of updates and requested a restart - now it just hangs at the windows splash screen. I have tried last known config but it still goes to the splash screen and hangs. What is the best way to try to recover from this?
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Robin CMSenior Security and Infrastructure EngineerCommented:
Can you get into Safe Mode or does that hang too?
I had a machine do this recently and believe it or not it was the antivirus (AVG) - uninstalled and it booted fine.
Another possible culprit is apparently the graphics driver, so if you can get into safe mode and uninstalling the a/v doesn't fix it, try removing the graphics driver next.
Robin CMSenior Security and Infrastructure EngineerCommented:
AVG article confirming that their product can cause the machine to fail to boot:
I have read that other a/v products can cause the same problem.
jad2009Author Commented:
Thanks for you comment. In the end it was a bios hang - liaised with Dell and upgraded this. The updates then configured and the system ran a repair and then booted.

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jad2009Author Commented:
Help provided by Dell to resolve
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Windows Server 2012

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