It succesfully restored the RegBack hives. First boot BSOD with the same error as usual.
1st startup repair: was scanning for problems for a few minutes, but computer could not be repaired, error: StartupRepairOffline
2nd startup repair: scanning was done in a few seconds, computer could not be repaired
3rd startup repair: also done within a few seconds, computer could not be repaired
I looked into the activity logs and noticed the last item (translated):
Recovery Operation: Control and restore integrity of system files
Result: Failed. Error code = 0x490
Duration: 178824ms