Shell keeps getting changed when I restart

Will not boot in to safe mode, will not do last good configuration, nothing was found when I ran Kaspersky ttdskiller. Will not launch repair start-up, it just keeps restarting itself over and over again. The Shell shows cmd.exe /k start.cmd.exe and I should warn you, I am not that tech savy..


Running Windows 7 on a Dell OptiPlex 780.


I have researched and researched and come to my wits end. I tried the other forum on this site about the Shell, but none of that worked either. I give....