we moved the computer the other day so we had to unplug everything. when we went to plug back in the monitor and printer, i turned on the tower and the monitor showed the hp startup screen with the log in then the monitor went blank and nothing else came back on . the monitors power light is on and the tower light is on. if i shut monitor off and turn back on i see the log on screen for a second. i need to get business info off so please help.