Hi I'm ticketyboo, a freinds daughter appears to have completely killed her C300, should be running on Windows XP Home, but wont go past a message which says that Windows did not start successfully, then gives options on how you want to start, i.e. safe mode, normally, last known configuration. None of these options has any effect and evenNorton save and restore and GoBack are not helping. I've also tried various other antivirus software, also no good. Any ideas anyone ???