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Video Not Displaying, ThinkCentre M 8120

2011-08-04, 23:38 PM

So, my cpu was working fine until the montor went blank, and mouse/keyboard would not bring the screen back up.


Note: I did confirm monitor works properly in other computers.


I turned off CPU and disconnected all cords.


I recieved NO Beep.


Then 2 short 1 LOOOOOOOOOOOOG (never ending) beep.


Note; I check power, and everything is perfect. Cpu work, just does not boot on screen.


According to your troubleshooting I need to take the following action:


  1. System board
  2. LCD assembly
  3. DIMM

However, I am not sure what they mean. One advice was to reseat LCD, however, I don't know where the video card is located.


Please help.




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Re: Video Not Displaying, ThinkCentre M 8120

2011-08-08, 8:32 AM

hey whitney,


Do refer to the following Hardware Maintenance Manual :






For 1 - it refers to you checking if there is any loose components

For 2 - it refers to the monitor and for you to check that all cable is connected correctly

For 3 - it refers to the RAM of your motherboardm whereby you should remove and then resit the memory.

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