Sometimes when I leave my computer for a few minutes, when I come back the monitor is completely black except for a blue and green dotted line along the top.  I dont know what causes this.  I have no screensave applied, no standby, no hibernation.  All the computer is set to do is turn off the monitor.  And then whae I wake it up, the monitor turns on and I see the screen I described above.  I am running ME with 128mb sdram with a 32mb NiVidia Geforce4 graphics card.  Any hep on the issue is welcome if you have it.  Thanks in advance.
  
  