A computer that I use regularly has now locked me out. When I booted up this AM, it asked for a name & PW. I have never needed to do that before. Also it gives me an option for a PW reset providing I made a disc. I did not . The OS is windows 7 Ultimate. I haven't the foggiest idea as to why this would occur. is there any way out of this mess or do I need to reformat & start over?? Thanks much ................