HKCU reg files will be applied to the Default User's profile, but may end up being ignored due to Windows new user provisioning. That can't be helped. HKLM reg files should always work (unless they conflict with a Windows first-time process that insists on creating the same values).
To know if NTLite didn't apply your registry changes correctly, you can load the offline reg hives:
1. Load the updated image in NTLite.
2. "reg load HKLM\TEMP C:\Users\nazari\AppData\Local\Temp\NLTmp[xxx]\Users\Default\NTUSER.DAT"
3. Run regedit, and inspect HKLM\TEMP for the expected changes.
4. Exit regedit.
5. "reg unload HKLM\TEMP"
6. "reg load HKLM\TEMP C:\Users\nazari\AppData\Local\Temp\NLTmp[xxx]\Windows\System32\config\SYSTEM" or Software.
7. Run regedit and inspect HKLM\TEMP for the expected changes.
8. "reg unload HKLM\TEMP"