[QUOTE=repo;3686727][QUOTE]few of the files get corrupted and system is not booting up
What do you mean?
What happens, errormessages?
i was trying to connect two monitors with that system. the changes was made in Admin->Display->DualHead->
(check ) use dual head.
(configre) generate lcd display->lcd palnel 1280X1024 ok
then desktop layout-> spanning Desktops ok
then saving in Xserver
then the system doesn't boot on reboot
the other day i changed the resolution of screen and the the system stops booting only says resolution out of range
but that is not the query the query is how can i repair fedora by the fedora dvd using which all options so that whenever one or the other problem arise i need not to reinstall fedora again and again loosing all my data and packages