my on board computer wont turn off on 1994 BMW 325i

when I turn the car off the on board computer stays on, and the windows still work after I turn the car off, and open the door????? How can I fix this? Please I need a jump every morning to get to work.....

Asked by for the 1994 BMW 325i
sounds like you have a faulty ignition switch. you may want to have a reputable local BMW specialty shop verify this.