Hi all need your help. My toshiba M45-S269 will not start. tries to start but then stops midway through. Does the same thing in every safe mode. Tried to repair windows install but it asks for a administrators password. I never had one on this computer and have tried any possible one that I would use. I used ntbr-cd to run a chkdsk and that worked well. Am stuck and cannot think of what else to do. Would appreciate any help.