Dell Optiplex GX280 CMOS beep code 1-3-1-1

I have two Dell Optiplex GX280's that are giving me the same CMOS beep code: 1-3-1-1.  Dell's site and others say to reseat the memory.  I have tried reseating the memory and different memory, yet still get the beep code.  
Thanks.
Heath CalhounAsked:
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Heath CalhounConnect With a Mentor Author Commented:
Found mother board was bad.  Replaced motherboards, now ok.
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greyknight17Commented:
What are the errors lights in the back? You should see ABCD on the back. Let us know what colors they are (green or amber).

The beeps you provide don't seem to be listed at:

http://www.pchell.com/hardware/beepcodes.shtml#phoenix

What problems are you having with them now? Is there any video? If not, try using another video card to see if it helps. Otherwise, check the motherboard and see if there are any blown out capacitors.
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Heath CalhounAuthor Commented:
Goto the website BiosCentral and in the Dell section find it.
http://www.bioscentral.com/postcodes/dellbios.htm

The lights appear to be all four green.
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greyknight17Commented:
How many sticks of memory do you have there? If more than one, just try it out with one. Also try it in different memory banks/slots to see if it helps.
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Heath CalhounAuthor Commented:
Just 2 sticks.  have tried that and tried 4 sticks.
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greyknight17Commented:
Did you try that one stick of memory in all the memory slots/banks also? This is to confirm that the memory slots are not the cause of the problem. Also try it with the other stick of memory for all the slots.
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