this error found when connecting SecureCRT.
That looks like the applied firmware is partially corrupt, presumably due to the power failure.
Suggestion :
Download / install the Hikvision
tftp updater, and place the firmware file in the same folder.
Hikvision IP Camera Emergency Firmware Recovery TFTP. Check this thread for info on how to use this tool to un-brick your Hikvision camera.
ipcamtalk.com
At power-on, interrupt the bootloader (probably with Control-U) and follow the on-screen instructions to update the firmware.
If the bootloader goes to a command prompt instead of the update menu, use the 'printenv' command to show what the 'ipaddr' and 'serverip' IP addresses are set to.
Change the PC IP address to the same as 'serverip'.
Use the 'update' command to apply the firmware.