Dell OptiPlex 790 Support Question
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Question posted by vheltelbma on July 22nd, 2014
Dell Optiplex 790 Won't Turn On And A Three Is On The Front
Current Answers
Answer #1: Posted by DellJesse1 on July 22nd, 2014 4:53 AM
The diagnostic led 3 showing could possibly mean a A possible system board failure has occurred. Try unplugging the computer. Allow one minute for the power to drain. Plug the computer into a working electrical outlet and press the power button. You can also reseat the processor as well.
Thank You,
Dell-Jesse1
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