VM clone error after sysprep "Windows could not finish configuring the system"

Symptom:

A VM is cloned and sysprepped. For the first boot, it will throw you an error "Windows could not finish configuring the system". How may times it will show this message, it will keep on restarting but just stays there. NOTE: Few lucky times it got fixed by itself after few restarts. So, please try 4-5 restart before proceeding with the work around. 

Cause: Might be one of the digitally signed drivers.. may be related to any of the Anti-virus drives which are not digitally signed or something I guess. 

Workaround: 

NOTE - This worked for me on Windows 2008 R2 server. TRY THIS AT YOUR OWN RISK. DON'T BLAME ME IF IT BRICKS SOMETHING

Once you see the message window on your VM console, press Shift+F10. This will bring you a command prompt. At the prompt enter the following commands one after one. 

bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS

bcdedit.exe -set TESTSIGNING ON

Now, restart the VM one more time. Once you logon to the VM, revert the changes you did above by running following commands at command prompt. 

bcdedit.exe -set loadoptions EENABLE_INTEGRITY_CHECKS

bcdedit.exe -set loadoptions TESTSIGNING OFF

Courtesy: Couple of articles/Forums I have googled. 

Jeff Harrison at http://social.technet.microsoft.com/Forums/en-US/w7itproinstall/thread/f7e1a2ce-f797-4e34-ae47-529926186275

Shankar Ganesh at http://www.killertechtips.com/2009/05/05/disable-driver-signing-windows-7/

Later folks...