Win 7 SP3 domain laptop is encrypted with Sophos Safeguard Easy v.6.0. Since the user locked the device at pre-boot. At POA even with local admin acct. We had no chance to start Window. That's why we restored the disk through the system image. After starting the Windows at every attempt when hit Ctrl+Alt+Delete keys it shutdowns the laptop.
At Safe Mode we checked the event logs but apparently nothing serious found. Did also checkdisk.But still the same.