I have a Video problem on my Qosmio G15 - when booting it is displaying equi-distant vertical lines with the standard display, I am also taking an error that my OS is not installed and that is after a Ghost reinstall of the OS provided by Toshiba, it has a 128 MB nVIDIA GeForceFX Go5700, I don't know if this is intergral to the MB or can be replaced with the same or similar...Thoughts ? Thanks