Several reason can cause this like
- Damage registry
- Windows unable to read the profile list
- Antivirus can also delay loading the profile, so windows will load the Temp Profile
First try to restart the computer several time, as it also maybe a temp problem.
If restarting did not help open the registry and navigate to
Here you will find the profile list SIDs, as you see there is a profile with .BAK extension, just simple remove the.BAK and reboot, everything should be OK.
If the problem present, remove the key and restart the computer, it will be fixed
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