For 4 hours..."Flashing embedded controller.Do not power off." -- on my screen for 4 hours...

On a Thinkpad X1 Carbon, I did a Lenovo System Update.
One of the updates included the BIOS. The system shutdown and rebooted.
The message on the bottom left of the reboot splash screen has been:
"Flashing embedded controller. Do not power off."
for the past 4 hours.
Any suggestions?

Remove Sophos.
https://discussions.apple.com/message/21069437#21069437
Upgrading RAM may help.
If your Mac runs slowly:
http://support.apple.com/kb/PH19031?viewlocale=en_US&locale=en_US
Start up in Safe Mode. http://support.apple.com/en-us/HT1564
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Repair Disk
Steps 1 through 7
http://support.apple.com/kb/PH5836
Best.

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My thinkpad x220 does not power off, it goes through the whole shutdown process as expected until reaching the last step where it displays "> POWER OFF" and just sits there until the battery is empty or I force the power off by using the power button.
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-edit-
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This is what you're looking for : https://bugzilla.kernel.org/show_bug.cgi?id=33872
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For 4 hours..."Flashing embedded controller.Do not power off." -- on my screen for 4 hours...

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