I am having software problems I can not get windows to load in normal mode. it will come up in safe mode. i have tried all ways of booting it up from diagostic to selective start up. the problem started when i was putting in a new sound card and the driver would not load it would stop at 77 percent I kept getting a message about a catroot file. when it got locked up and i tried to reboot it will not load windows up normal only in safe mode