The prob. is between comodo IS and offline activation for windows 8
when installing comodo before activation ( with disable av, self defense, firewall) or after it, when re-login, the screen keep flicker with no response and can’t open task manager or do anything,but it open fine in safe mode
repairing windows isn’t the solution you have to format your pc.
Comodo IS Version : 5.12 and 6 Beta
sorry for my bad Eng.