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Hellp with Boot Violation

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I tried to restore a tib backup file within windows and also with a bootable emergency disk.
I am getting the same error:

Secure Boot Error.
Invalid signature detected. Check Secure boot policy in setup.

This is a brand new, Dell Windows 8 computer. I hadn't touch anything. I have never seen this error in the past.

I am using Acronis Ture Image 2013 version. I have no idea what this error is about. Please advise me how to fix this problem. I got stuck at this point.

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I am having the same problem with my Toshiba notebook. What did Dell tell you?

Thank you...

Todd