3. The repair installation

If all previous attempts to save the system have failed, the third, last and most effective one presents itself
Possibility of a repair installation. Even an operating system that has been totally destroyed by registry changes can still be saved in this way.

Here, the entire base of Windows XP is renewed. All drivers and updates that have already been installed will be lost and will have to be reloaded after the repair has been carried out.
In contrast to a new installation, however, all programs, applications and your own files remain untouched and function perfectly after the repair.

{/source 3. The repair installation After the CD drive has been selected as the first boot source in the BIOS, the computer is started with the Windows installation CD. The same setup screen appears as for the recovery console. However, the Enter key is now pressed to select the Press Enter key to install Windows XP now parameter. The EULA is then confirmed with F8. The message appears: If one of the following Windows XP installations is corrupted, Setup can attempt to repair it. Now the damaged installation is selected. The command Press the R key to repair the selected Windows XP installation is executed. The setup routine that follows is the same as for a new installation. The valid serial number also needs to be entered. {source}

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This tip comes from www.win-tipps-tweaks.de
© Copyright Michael Hille

Warning:
Using Registry Editor or its tips incorrectly can cause serious system problems that may require you to reinstall your operating system. Tampering with the registry files and using the tips is at your own risk.