How to repair (instead of reinstall) sharepoint server configurations!!

setup

Performs configuration for SharePoint Products and Technologies based on the installation mode. Also repairs the configuration. If the product or technology is installed in stand-alone mode, then stand-alone configuration is done. If the product or technology is not in stand-alone mode, you must complete the initial configuration by using the SharePoint Products and Technologies Configuration Wizard instead of the psconfig.exe command-line utility. To run the wizard, on the Start menu, point to All Programs, point to Administrative Tools, and then click SharePoint Products and Technologies Configuration Wizard. If you want to repair a stand-alone installation, first run setup /repair (for more information, see the Setup Help system), and then psconfig.exe -setup. For server farm installations, after running setup /repair, use the SharePoint Products and Technologies Configuration Wizard instead of the psconfig.exe command-line utility. Takes the following optional parameter: [-lcid <1033>] The locale ID (LCID) that specifies the installation language. Example psconfig.exe -cmd setup