I am having Vista operating system installed on my Dell XPS m1330 notebook. There are many application programs on my system. After starting adobe updater the system went into not responding mode. I turned off my system and restarted again. It provides me two options as: repair windows, or start normally. After selecting the first option progress bar starts and stops. I also tried booting in safe mode but it freezes at crcdisk.sys. Is there any way to overcome this problem?