By default, a backup of the registry system is in My Documents. This can be changed in the system default settings.
When Windows won't boot because of changes made to the registry, you can copy the correct registry files back onto the hard drive.
You need to contact the original lessor for a copy or to have a duplicate one executed.
System Restore Point
System Restore Point
The deed must have been recorded. You can obtain a copy at the land registry office.
Find the CNA registry office of the state in which you are located, then call their automated phone line or visit the office.
Every genuine copy of Windows software has its own unique serial number, which is embedded in the registry of the computer it was originally installed on. Windows regularly compares the registry entry against the operating system to check if they're legitimate.
You can get a copy from the Jockey Club, which is the American Thoroughbred registry. There may be a small fee and may be able to download which will save time.
If you mean a file with the extension *.reg, when you double click on it the operating system will ask you "Do you want to add information in the registry?" (or something like that). If you confirm you will change the registry. You have to be extremely careful when you are using such files because it can cause irreversible damage of the registry and as result the death of the operating system. If you mean SAM file. Then nothing will happen. The operating system will not allow you to modify the file. You cannot even copy it.
To be honest, you really don't even need a tool for this. All you have to do is locate the registry hives and copy them somewhere, or even make copies in the same folder, but with other extensions.Or you can use Regedit that comes with Windows. While it is good for exporting portions of the registry, it is not good for exporting the entire registry. Some keys or branches will be locked while you try to export them, and they will be omitted from the exported file.
The functionality of a registry cleaner is to optimize Windows registry, remove unwanted entries from registry, and fix errors caused by the registry.