uninstall nero 12 driveitup drive, casue continue crash " blue screen" when reboot

uninstall backitup drive for nero 12 in window 7, uninstall successfully, but reboot keep getting blue screen, saying bad patch. Window 7 lock in a bootup crash loop. End up need to restore the image from the backup to recover.
How I can uninstall the "backitup drive" for nero 12 without causing window 7 to keep rebooting
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