37GI41100-10 PCB M B I4XIXX REV 1.0 37GU41100-11 PCB MAIN BO FOR U41SA REV 1.1 37GU41100-30 PCB MAIN BO FOR U41SA REV 03
lenovo W520 H0222-5 LKN-3 WS MB The following message occurs under the real time clock error check date and time settings 0183: Bad CRC of Security Settings in EFI Variable configuration changes - restart the system Infinite loop reset